Copolymer compositions, foamed molded bodies, cross-linked molded bodies, and methods for manufacturing the like.

Abstract

The copolymer composition of the present invention is characterized by comprising: a copolymer (S) having constituent units derived from ethylene (A), constituent units derived from α-olefins (B) having 3 to 20 carbon atoms, and constituent units derived from a specific non-conjugated polyene (C), and satisfying requirements (i) and (ii); a hydrogen-containing silicone compound (Y), which is an organo-based hydrogen polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atoms bonded to hydrogen atoms within the molecule; and a platinum-based catalyst for hydrogen-silicone crosslinking. (i) [A] / [B] is 40 / 60 to 99.9 / 0.1. (ii) The mass percentage concentration of the constituent units derived from the non-conjugated polyene (C) is 0.07 to 10% by mass.

Description

Copolymer compositions, foamed molded bodies, cross-linked molded bodies, and methods for manufacturing the like. This invention relates to ethylene-α-olefin-nonconjugated polyene copolymer compositions and their manufacturing methods, foamed molded articles obtained from such copolymer compositions and their manufacturing methods, and cross-linked molded articles and their manufacturing methods. This invention claims priority to Japanese Patent Application No. 2022-003316, filed January 12, 2022, and Japanese Patent Application No. 2022-142879, filed September 8, 2022, the contents of which are incorporated herein by reference. The copolymer composition obtained by hydrogen silicon crosslinking of ethylene-α-olefin-nonconjugated polyene random copolymer (Patent Document 1) has the characteristics of superior mechanical strength, heat aging resistance, compression set, blooming resistance compared to vulcanization or peroxidation crosslinking, and continuous crosslinking, and is expected to be used in sealing parts such as clamps and gaskets. Patent Document 1 proposes a copolymer composition that, during the mixing-forming process at a lower temperature of 50-130°C, does not undergo crosslinking and has a long coking time, but can undergo crosslinking in a short time at a crosslinking temperature of 150-200°C. Patent Document 2 proposes a crosslinking method that uses a hydrogen-containing silicon-based compound in combination with a low-cost and readily available organic peroxide. [Prior Art Documents] [Patent Documents] [Patent Document 1] Japanese Patent Application Publication No. 2018-131527 [Patent Document 2] Japanese Patent Application Publication No. 2019-156950 (The problem the invention aims to solve) However, Patent Documents 1 and 2 do not adequately examine the hydrogen-containing silicon compounds used in crosslinking. In view of the above, the present invention aims to provide copolymer compositions containing ethylene-α-olefin-non-conjugated polyene copolymers that are superior in terms of the physical properties and processability of the resulting molded articles, methods for manufacturing the same, foamed molded articles obtained from such copolymer compositions and methods for manufacturing the same, and crosslinked molded articles and methods for manufacturing the same. (Technical Means for Solving the Problem) In order to achieve the above-mentioned objectives, the present invention has the following form. [1] A copolymer composition comprising: a copolymer (S); a hydrogen-containing silicone compound (Y); and a platinum catalyst; wherein the copolymer (S) has a constituent unit derived from ethylene (A), a constituent unit derived from an α-olefin (B) having 3 to 20 carbon atoms, and a constituent unit derived from a non-conjugated polyene (C) having at least two or more partial structures selected from formula (I) and formula (II) below, and satisfies the following requirements (i) and (ii); the hydrogen-containing silicone compound (Y) is an organo-based hydrogen polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atoms bonded to hydrogen atoms in the molecule, as shown in formula (a); The aforementioned requirement (i) is that the mole number [A] of the constituent units derived from ethylene (A) is relative to the mole number [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms, with a [A] / [B] ratio of 40 / 60 to 99.9 / 0.1; the aforementioned requirement (ii) is that the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the aforementioned copolymer (S) is 0.07 to 10% by mass; [Chemistry 1] [Chemistry 2] In equation (a), n and p are independently 0 or positive numbers, m is a number in the range of 1 to 20, the sum of n, m and p is 5 to 50, and the complex number R 1 and R 2 Each is an independent monovalent alkyl group, R a It is an aralkyl group, and the two Rs are independently selected from R. 1 R 2 , hydrogen atom and R aThe base of the group formed by these constituent units can be arranged in a block shape or in a random arrangement, wherein when n=1, at least one of the two Rs is a hydrogen atom, and when n=0, both Rs are hydrogen atoms. [2] The copolymer composition of [1] further contains a sodium bicarbonate foaming agent that satisfies the following requirement (b); The above requirement (b) is that in the cumulative distribution curve of the number of roughnesses, 10% of the roughnesses are 0.9 or less, and in the cumulative distribution curve of the number of equivalent circle diameters, 90% of the equivalent circle diameters are 43 μm or more; wherein the roughness is the ratio of the envelope perimeter to the perimeter determined by dynamic image analysis with methyl ethyl ketone as the dispersion solvent; the equivalent circle diameter is the diameter of a circle with an area equal to the projected area of ​​the particle determined by dynamic image analysis with methyl ethyl ketone as the dispersion solvent. [3] A copolymer composition as described in [2], wherein, relative to 100 parts by mass of the copolymer (S), it contains 0.1 to 100 parts by mass of the hydrogen-containing silicon compound (Y), 0.001 to 10 parts by mass of the platinum catalyst, and 1 to 30 parts by mass of the sodium bicarbonate foaming agent. [4] A copolymer composition as described in [2] or [3], wherein, relative to 100 parts by mass of the copolymer (S), it further contains 0 to 2 parts by mass of a reaction inhibitor. [5] A copolymer composition as described in any one of [2] to [4], wherein, relative to 100 parts by mass of the copolymer (S), it further contains 0.07 to 10 parts by mass of a hindered phenolic antioxidant. [6] A foamed molded body comprising a foamed body that crosslinks and foams a copolymer composition as described in any one of [2] to [5]. [7] A method for manufacturing a foamed molded body includes melt extruding and cross-linking a copolymer composition of any one of [2] to [5]. [8] A copolymer composition as described in [1], wherein the copolymer (S) further satisfies the following requirements (iii) to (v), and the limiting viscosity [η] is 2.0 to 4.0 dL / g; further, relative to 100 parts by mass of the copolymer (S), it contains 0.1 to 200 parts by mass of carbon black, 0.1 to 200 parts by mass of paraffinic processing oil, and reaction inhibitors as needed; the composition, which is a mixture of components other than the above-mentioned hydrogen-containing silicon-based compound (Y), the above-mentioned platinum catalyst and the above-mentioned reaction inhibitor, has a Munich viscosity "ML(1+4)100℃" of 8 to 200 obtained by the method described in JIS K 6300-1:2013; the above-mentioned requirement (iii) is obtained by formula (1) as (n C (n) is 4.5 or higher and 40 or lower; C= (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C); The above requirement (iv) is the complex viscosity η obtained by linear viscoelasticity determination (190°C) using a rheometer at a frequency of ω = 0.1 rad / s. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S)) satisfy the following equation (2); P / ([η]) 2.9 )≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is the number of long chain branches per 1000 carbon atoms obtained by 3D-GPC (LCB) 1000C The natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3); LCB 1000C≦1-0.07×Ln(Mw) ‧‧‧Formula (3). [9] A crosslinked molded body, characterized in that it is obtained by crosslinking the copolymer composition of [8].

[10] The copolymer composition of [1], wherein the copolymer (S) further satisfies the following requirements (iii) to (v), and the limiting viscosity [η] is 0.5 dL / g or more and less than 2.0 dL / g; further, relative to 100 parts by mass of the copolymer (S), it contains 10 to 100 parts by mass of paraffinic processing oil; the Munich viscosity "ML(1+4)100℃" obtained by the method described in JIS K 6300-1:2013 is 0.1 to 8; the above requirement (iii) is obtained by formula (1) (n C (n) is 4.5 or higher and 40 or lower; C = (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C); The above requirement (iv) is the complex viscosity η at a frequency ω = 0.1 rad / s obtained by linear viscoelasticity determination (190°C) using a rheometer. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S)) satisfy the following equation (2); P / ([η]) 2.9 )≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is the number of long chain branches per 1000 carbon atoms obtained by 3D-GPC (LCB) 1000C The natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3); LCB 1000C ≦1-0.07×Ln(Mw) ‧‧‧Formula (3).

[11] A crosslinked molded body, characterized in that it is obtained by crosslinking the copolymer composition of

[10] .

[12] The copolymer composition of [1], wherein the copolymer (S) further satisfies the following requirements (iii) to (v), and the limiting viscosity [η] is 0.5dL / g or more and less than 2.0dL / g; further, relative to 100 parts by mass of the copolymer (S), it contains 0.1 to 200 parts by mass of carbon black and 100 to 400 parts by mass of paraffinic processing oil; the Brinell rotational viscosity at 25°C obtained by the method described in JIS K 7117:1999 is 6000 Pa‧s or less; the above requirement (iii) is obtained by formula (1) (n C (n) is 4.5 or higher and 40 or lower; C = (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C); The above requirement (iv) is the complex viscosity η obtained by linear viscoelasticity determination (190°C) using a rheometer at a frequency of ω = 0.1 rad / s. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100)The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S)) satisfy the following equation (2); P / ([η]) 2.9 )≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is the number of long chain branches per 1000 carbon atoms obtained by 3D-GPC (LCB) 1000C The natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3); LCB 1000C ≦1-0.07×Ln(Mw) ‧‧‧Equation (3).

[13] A cross-linked molded body, characterized in that it is obtained by cross-linking the copolymer composition of

[12] .

[14] The copolymer composition of [1] further contains a reaction inhibitor and an organic peroxide (Z); the copolymer (S) further satisfies the following requirements (iii) to (v); the organic peroxide (Z) contains 0.2 to 6 parts by mass relative to 100 parts by mass of the copolymer (S); the above requirement (iii) is obtained by formula (1) (n C (n) is 4.5 or higher and 40 or lower; C = (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C); The above requirement (iv) is the complex viscosity η obtained by linear viscoelasticity determination (190°C) using a rheometer at a frequency of ω = 0.1 rad / s. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S)) satisfy the following equation (2); P / ([η]) 2.9 )≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is the number of long chain branches per 1000 carbon atoms obtained by 3D-GPC (LCB) 1000C The natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3); LCB 1000C≦1-0.07×Ln(Mw) ‧‧‧Formula (3).

[15] The copolymer composition as in

[14] , wherein, relative to 100 parts by mass of the copolymer (S), it contains 0.01 to 10 parts by mass of the hydrogen-containing silicon compound (Y), 0.001 to 1 part by mass of the platinum catalyst, and 0.001 to 5 parts by mass of the reaction inhibitor.

[16] A cross-linked molded body, characterized in that it is obtained by cross-linking the copolymer composition of

[14] or

[15] .

[17] A method for manufacturing a copolymer composition of any one of [1] to [5], [8],

[10] ,

[12] ,

[14] and

[15] , comprising: mixing the copolymer (S) and a hydrogen-containing silicon compound (Y) at 80 to 170°C for 1 to 10 minutes to obtain a first-stage formulation; and adding a platinum catalyst to the first-stage formulation and mixing at 10 to 130°C for 1 to 30 minutes to obtain a second-stage formulation; wherein the copolymer (S) has a constituent unit derived from ethylene (A), a constituent unit derived from an α-olefin (B) having 3 to 20 carbon atoms, and a constituent unit derived from a non-conjugated polyene (C) having at least two or more partial structures selected from formula (I) and formula (II) below, and satisfies the following requirements (i) and (ii); The aforementioned hydrogen-containing silicone compound (Y), as shown in formula (a), is an organic-based hydrogen-containing polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atom bondsed to hydrogen atoms within the molecule; The aforementioned requirement (i) is that the mole ratio [A] of the constituent units derived from ethylene (A) to the mole ratio [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms is 40 / 60 to 99.9 / 0.1; the aforementioned requirement (ii) is that the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the aforementioned copolymer (S) is 0.07 to 10% by mass; [Chem. 3] [Chemistry 4] In equation (a), n and p are independently 0 or positive numbers, m is a number in the range of 1 to 20, the sum of n, m and p is 5 to 50, and the complex number R 1 and R 2 Each is an independent monovalent alkyl group, R a It is an aralkyl group, and the two Rs are independently selected from R. 1 R 2 , hydrogen atom and R aThe base of the group formed by these constituent units can be arranged in a block shape or in a random arrangement, wherein when n=1, at least one of the two Rs is a hydrogen atom, and when n=0, both Rs are hydrogen atoms.

[18] In the method of manufacturing the copolymer composition as in

[17] , 0.1 to 100 parts by mass of the hydrogen-containing silicon compound (Y) and 0.001 to 10 parts by mass of the platinum catalyst are used relative to 100 parts by mass of the copolymer (S).

[19] In the method of manufacturing the copolymer composition as in

[17] or

[18] , when obtaining the formulation of the second stage, a reaction inhibitor is further added to the formulation of the first stage, and the formulation of the second stage is obtained by mixing at 10 to 130°C for 1 to 30 minutes.

[20] A method for manufacturing a copolymer composition as described in

[19] , wherein 0.05 to 5 parts by mass of the reaction inhibitor are used relative to 100 parts by mass of the copolymer (S).

[21] A crosslinked molded body is formed by crosslinking a copolymer composition obtained by the method for manufacturing a copolymer composition according to any one of

[17] to

[20] .

[22] A method for manufacturing a crosslinked molded body comprises: melting and kneading the above-mentioned copolymer (S), the above-mentioned hydrogen-containing silicon-based compound (Y) and the above-mentioned platinum catalyst to obtain a compound containing a copolymer composition of any one of [1] to [5], [8],

[10] ,

[12] ,

[14] and

[15] ; pressing the above-mentioned compound at 120 to 200°C for 1 to 20 minutes to perform a first crosslinking, thereby obtaining a first molded body; and heating the above-mentioned first molded body in a heat medium at 120 to 160°C for 10 to 24 hours to perform a second crosslinking; The aforementioned copolymer (S) comprises units derived from ethylene (A), units derived from α-olefins (B) having 3 to 20 carbon atoms, and units derived from non-conjugated polyenes (C) having at least two partial structures selected from formulas (I) and (II) below, and satisfies the following requirements (i) and (ii); The aforementioned hydrogen-containing silicone compound (Y) is an organic-based hydrogen polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atoms bonded to hydrogen atoms in the molecule, as shown in formula (a); The aforementioned requirement (i) is that the mole number [A] of the units derived from ethylene (A) relative to the mole number [B] of the units derived from α-olefins (B) having 3 to 20 carbon atoms [A] / [B] is 40 / 60 to 99.9 / 0.1; The aforementioned requirement (ii) refers to the concentration of the mass percentage of the constituent units derived from the non-conjugated polyene (C) relative to the total constituent units constituting the copolymer (S) being 0.07 to 10% by mass; [Chem. 5] [Chemistry 6] In equation (a), n and p are independently 0 or positive numbers, m is a number in the range of 1 to 20, the sum of n, m and p is 5 to 50, and the complex number R 1 and R 2 Each is an independent monovalent alkyl group, R a It is an aralkyl group, and the two Rs are independently selected from R. 1 R 2 , hydrogen atom and R aThe base of the group formed by these constituent units can be arranged in a block shape or in a random arrangement, wherein when n=1, at least one of the two Rs is a hydrogen atom, and when n=0, both Rs are hydrogen atoms.

[23] In the method of manufacturing the cross-linked molded body as in

[22] , 0.1 to 100 parts by mass of the hydrogen-containing silicon compound (Y) and 0.001 to 10 parts by mass of the platinum catalyst are used relative to 100 parts by mass of the copolymer (S).

[24] In the method of manufacturing the cross-linked molded body as in

[22] or

[23] , when obtaining the above-mentioned compound, a reaction inhibitor is further added for melt mixing to obtain the above-mentioned compound.

[25] In the method of manufacturing the cross-linked molded body as in

[24] , 0.05 to 5 parts by mass of the reaction inhibitor are used relative to 100 parts by mass of the copolymer (S).

[26] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[25] , wherein the content of the copolymer (S) is preferably 10 to 50% by mass, more preferably 15 to 45% by mass, and even more preferably 20 to 40% by mass, relative to the total mass of the copolymer composition.

[27] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[26] , wherein the content of the constituent unit derived from ethylene (A) is preferably 50 to 80% by mass, more preferably 60 to 75% by mass, and even more preferably 65 to 72% by mass, relative to the total mass of the copolymer (S).

[28] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the crosslinked molded body or the method of manufacturing the crosslinked molded body, as described in any of [1] to

[27] , wherein, relative to the total mass of the copolymer (S), the content of the constituent units derived from the α-olefin (B) having 3 to 20 carbon atoms is preferably 20 to 50% by mass, more preferably 25 to 40% by mass, and even more preferably 28 to 35% by mass.

[29] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the crosslinked molded body or the method of manufacturing the crosslinked molded body as described in any of [1] to

[28] , wherein, relative to the total mass of the copolymer (S), the content of the constituent units derived from the non-conjugated polyene (C) is preferably 0.1 to 8.0% by mass, more preferably 0.5 to 5.0% by mass, even more preferably 1.0 to 3.0% by mass, and particularly preferably 1.2 to 2.0% by mass.

[30] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the crosslinked molded body or the method of manufacturing the crosslinked molded body as described in any of [1] to

[29] , wherein the molar ratio is preferably 50 / 50 to 90 / 10, more preferably 55 / 45 to 85 / 15, even more preferably 55 / 45 to 78 / 22, and particularly preferably 63 / 37 to 76 / 24.

[31] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the cross-linked molded body or the method of manufacturing the cross-linked molded body as described in any of [1] to

[30] , wherein the α-olefin (B) having 3 to 20 carbon atoms is preferably selected from at least one of the group consisting of propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-heptene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene and 1-eicosene, more preferably selected from at least one of the group consisting of propylene, 1-butene, 1-hexene and 1-octene, and even more preferably propylene.

[32] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a cross-linked molded body, or a method for manufacturing a cross-linked molded body, as described in any of [1] to

[31] , wherein the non-conjugated polyene (C) is preferably at least one of the group consisting of 5-vinyl-2-norphene (VNB), norphene, 1,4-hexadiene, and dicyclopentadiene, more preferably containing VNB, and even more preferably VNB.

[33] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the crosslinked molded body or the method of manufacturing the crosslinked molded body as described in any of [1] to

[32] , wherein the weight average molecular weight of the copolymer (S) is preferably 10,000 to 600,000, more preferably 30,000 to 500,000, even more preferably 50,000 to 400,000, and particularly preferably 60,000 to 200,000.

[34] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body as described in any of [1] to

[33] , wherein the content of the hydrogen-containing silicone compound (Y) relative to the total mass of the copolymer composition is preferably 0.3 to 5.0% by mass, more preferably 0.5 to 3.0% by mass, and even more preferably 0.7 to 2.5% by mass.

[35] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body as described in any of [1] to

[34] , wherein the content of the aralkyl group is preferably 5 to 20% by mass, more preferably 8 to 18% by mass, and even more preferably 10 to 15% by mass, relative to the total mass of the hydrogen-containing silicone compound (Y).

[36] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a cross-linked molded body, or a method for manufacturing a cross-linked molded body, as described in any one of [1] to

[35] , wherein the aralkyl group is preferably selected from at least one of the group consisting of benzyl, phenylethyl, phenylpropyl and phenylbutyl, more preferably a straight-chain or branched-chain phenylpropyl, and even more preferably -CH. 2-CH(CH 3)-C 6H 5.

[37] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[36] , wherein the content of the alkyl group is preferably 15 to 40% by mass, more preferably 20 to 38% by mass, and even more preferably 25 to 35% by mass, relative to the total mass of the hydrogen-containing silicon compound (Y).

[38] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[37] , wherein the alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 10 carbon atoms, more preferably an alkyl group having 1 to 6 carbon atoms, and particularly preferably a methyl group.

[39] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any of [1] to

[38] , wherein in formula (a), m is preferably 1 to 10, more preferably 2 to 8, and even more preferably 3 to 6.

[40] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any of [1] to

[39] , wherein in formula (a), n is preferably 0 to 10, more preferably 2 to 9, and even more preferably 4 to 8.

[41] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any of [1] to

[40] , wherein in formula (a), p is preferably 0 to 10, more preferably 0 to 5, and even more preferably 0.

[42] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any of [1] to

[41] , wherein in formula (a), the two Rs are each preferably an alkyl group having 1 to 20 carbon atoms, more preferably an alkyl group having 1 to 10 carbon atoms, even more preferably an alkyl group having 1 to 6 carbon atoms, and particularly preferably a methyl group.

[43] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the crosslinked molded body or the method of manufacturing the crosslinked molded body as described in any of [1] to

[42] , wherein the content of the above-mentioned platinum catalyst is preferably 0.01 to 1.0% by mass, more preferably 0.02 to 0.5% by mass, and even more preferably 0.03 to 0.1% by mass relative to the total mass of the copolymer composition.

[44] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a cross-linked molded body, or a method for manufacturing a cross-linked molded body, as described in any one of [1] to

[43] , wherein the platinum-based catalyst is preferably selected from at least one of the group consisting of a monomer of platinum (platinum black), platinum chloride, platinum-olefin complex, platinum-alcohol complex, and a carrier thereof, more preferably selected from at least one of the group consisting of a complex of platinum chloride and 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane, and a complex of platinum chloride and 1,3-divinyltetramethyldisiloxane.

[45] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body, as described in any one of [1] to

[44] , wherein the copolymer composition further contains a sodium bicarbonate-based foaming agent.

[46] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body, as described in any one of [1] to

[45] , wherein the content of the sodium bicarbonate-based foaming agent relative to the total mass of the copolymer composition is preferably 0.1 to 2.0% by mass, more preferably 0.3 to 1.5% by mass, and even more preferably 0.7 to 1.0% by mass.

[47] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[46] , wherein the copolymer composition further contains a reaction inhibitor.

[48] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[47] , wherein the content of the reaction inhibitor relative to the total mass of the copolymer composition is preferably 0.005 to 0.3% by mass, more preferably 0.008 to 0.2% by mass, and even more preferably 0.01 to 0.15% by mass.

[49] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[48] , wherein the copolymer composition further contains a hindered phenolic antioxidant.

[50] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[49] , wherein the content of the hindered phenolic antioxidant is preferably 0.1 to 3.0% by mass, more preferably 0.3 to 2.0% by mass, and even more preferably 0.5 to 1.0% by mass, relative to the total mass of the copolymer composition.

[51] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[50] , wherein the copolymer composition further contains carbon black.

[52] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[51] , wherein the content of the carbon black is preferably 1 to 50% by mass, more preferably 3 to 45% by mass, and even more preferably 5 to 40% by mass, relative to the total mass of the copolymer composition.

[53] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[52] , wherein the copolymer composition further contains paraffin-based processing oil.

[54] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body as described in any of [1] to

[53] , wherein the content of the paraffinic processing oil is preferably 1 to 90% by mass, more preferably 3 to 50% by mass, and even more preferably 5 to 35% by mass, relative to the total mass of the copolymer composition.

[55] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body as described in any of [1] to

[54] , wherein the copolymer composition further contains an organic peroxide.

[56] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body as described in any of [1] to

[55] , wherein the content of the organic peroxide is preferably 0.1 to 5.0% by mass, more preferably 0.3 to 4.0% by mass, and even more preferably 0.5 to 3.0% by mass, relative to the total mass of the copolymer composition.

[57] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body, or the method for manufacturing the crosslinked molded body as described in any of [1] to

[56] , wherein the copolymer composition further contains a reinforcing agent.

[58] The copolymer composition, the method of manufacturing the copolymer composition, the foamed molded body, the method of manufacturing the foamed molded body, the cross-linked molded body or the method of manufacturing the cross-linked molded body as described in any of [1] to

[57] , wherein the content of the reinforcing agent is preferably 1 to 30% by mass, more preferably 3 to 25% by mass, and even more preferably 5 to 20% by mass relative to the total mass of the copolymer composition.

[59] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[58] , wherein the copolymer composition further contains a hygroscopic agent.

[60] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[59] , wherein the content of the hygroscopic agent relative to the total mass of the copolymer composition is preferably 0.5 to 3.0% by mass, more preferably 0.8 to 2.5% by mass, and even more preferably 1.0 to 2.0% by mass.

[61] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body or the method for manufacturing the crosslinked molded body as described in any of [1] to

[60] , wherein the solvent content in the copolymer composition is preferably 0 to 5% by mass, more preferably 0 to 1% by mass, and even more preferably substantially 0% by mass, relative to the total mass of the copolymer composition.

[62] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body or the method for manufacturing the crosslinked molded body as described in any of [1] to

[61] , wherein the above [A] / [B] is preferably 50 / 50 to 90 / 10, more preferably 55 / 45 to 85 / 15, even more preferably 55 / 45 to 78 / 22, and particularly preferably 63 / 37 to 76 / 24.

[63] A method for manufacturing a copolymer composition according to any one of

[17] ~

[20] and

[26] ~

[62] , wherein, when obtaining the formulation of the first stage mentioned above, it is preferably carried out at 100~170°C for 3~8 minutes, more preferably at 120~160°C for 4~7 minutes.

[64] A method for manufacturing a copolymer composition according to any one of

[17] ~

[20] and

[26] ~

[63] , wherein, when obtaining the formulation of the second stage mentioned above, it is preferably carried out at 10~100°C for 1~10 minutes, more preferably at 30~80°C for 3~8 minutes, and even more preferably at 40~60°C for 4~7 minutes.

[65] The method for manufacturing a foamed molded article according to any one of [7] and

[26] to

[64] , wherein the above melt extrusion is preferably carried out at a temperature of 30°C or higher but not more than 150°C for 5 to 30 minutes, more preferably at a temperature of 40 to 140°C for 5 to 20 minutes, and even more preferably at a temperature of 50 to 130°C for 7 to 15 minutes.

[66] The method for manufacturing a foamed molded article according to any one of [7] and

[26] to

[65] , wherein the crosslinking is preferably carried out at 150 to 200°C for 1 to 30 minutes, more preferably at 160 to 195°C for 5 to 20 minutes, and even more preferably at 170 to 190°C for 7 to 15 minutes.

[67] The method for manufacturing a crosslinked molded article according to any one of

[22] to

[62] , wherein the mixture is preferably obtained at less than 150°C for 5 to 30 minutes, more preferably at 40 to 140°C for 5 to 20 minutes, and even more preferably at 50 to 130°C for 7 to 15 minutes.

[68] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body or the method for manufacturing the crosslinked molded body as described in any of [1] to

[67] , wherein the iodine value of the copolymer (S) is preferably 1 to 10, more preferably 2 to 5, and even more preferably 3 to 3.5.

[69] The copolymer composition, the method for manufacturing the copolymer composition, the foamed molded body, the method for manufacturing the foamed molded body, the crosslinked molded body or the method for manufacturing the crosslinked molded body as described in any of [1] to

[68] , wherein the number of silicon atoms bonded to hydrogen atoms in the molecule of the hydrogen-containing silicon compound (Y)1 is preferably 2 to 10, more preferably 3 to 8, and even more preferably 5 to 7.

[70] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[69] , wherein the number of aralkyl groups in the molecule of the hydrogen-containing silicon compound (Y)1 is preferably 2 to 10, more preferably 3 to 8, and even more preferably 4 to 5.

[71] A copolymer composition, a method for manufacturing a copolymer composition, a foamed molded body, a method for manufacturing a foamed molded body, a crosslinked molded body, or a method for manufacturing a crosslinked molded body, as described in any one of [1] to

[70] , wherein the copolymer (S) has preferably at least one partial structure selected from at least one of the above formulas (I) and (II), and more preferably at least two. (Comparison with the advantages of prior art). According to the present invention, copolymer compositions containing ethylene-α-olefin-nonconjugated polyene copolymers and methods thereof, foamed molded articles obtained from such copolymer compositions and methods thereof, and crosslinked molded articles and methods thereof, which are superior in terms of physical properties or processability of the resulting molded articles, can be provided. <First State Sample> The copolymer composition of the first state sample of the present invention contains a copolymer (S), a hydrogen-containing silicon-based compound (Y), and a platinum-based catalyst. [Copolymer (S)] The copolymer (S) of this state has: constituent units derived from ethylene (A); constituent units derived from α-olefins (B) having 3 to 20 carbon atoms; and constituent units derived from non-conjugated polyenes (C). The copolymer composition of this state may also contain two or more copolymers (S). The mass percentage concentration of the total constituent units of the copolymer (S) is preferably 100 by mass, which is relative to the total constituent units of the copolymer (S). The constituent units derived from ethylene (A), α-olefins (B) with 3 to 20 carbon atoms, and non-conjugated polyenes (C) The copolymer (S) of this state sample satisfies the following requirements (i) and (ii). (i) The mole ratio [A] of the constituent units derived from ethylene (A) to the mole ratio [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms is 40 / 60 to 99.9 / 0.1. (ii) The mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the copolymer (S) is 0.07 to 10% by mass. Examples of α-olefins (B) with 3 to 20 carbon atoms (hereinafter sometimes simply referred to as "α-olefins (B)") include propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, and 1-eicosene. Among these, α-olefins with 3 to 8 carbon atoms, such as propylene, 1-butene, 1-hexene, and 1-octene, are preferred, with propylene being particularly preferred. These α-olefins are relatively inexpensive to produce, and the resulting copolymers (S) exhibit superior mechanical properties, thus yielding rubber-elastic molded bodies, making them superior. One or more of these α-olefins may be used. The non-conjugated polyene (C) molecule contains at least two non-conjugated polyenes selected from at least one of the following formulas (I) and (II). The copolymer (S) is cross-linked by hydrosilylation reaction with a hydrogen-containing silica compound (Y), thus possessing at least one, preferably two or more, carbon-carbon double bonds within the molecule. Particularly preferred is that the molecule contains at least one of at least one of the following formulas (I) and (II) derived from the non-conjugated polyene (C), and more preferably two or more. [Chemistry 7] Examples of non-conjugated polyenes (C) include 5-vinyl-2-norphene (VNB), norphene, 1,4-hexadiene, and dicyclopentadiene. Among these, non-conjugated polyenes (C) preferably contain VNB due to their high availability, good hydrosilicone crosslinking, and ease of improving the heat resistance of the polymer composition. A single non-conjugated polyene (C) or two or more can be used. The copolymer (S) in this state sample may further contain constituent units (CX) derived from non-conjugated polyenes (CX) whose molecules contain only one partial structure selected from the group consisting of the above general formulas (I) and (II). This is within the scope of not impairing the effect of this state sample. Examples of such non-conjugated polyenes (CX) include 5-ethylidene-2-norphene (ENB), 5-methylene-2-norphene, 5-(2-propenyl)-2-norphene, 5-(3-butenyl)-2-norphene, 5-(1-methyl-2-propenyl)-2-norphene, 5-(4-pentenyl)-2-norphene, 5-(1-methyl-3-butenyl)-2-norphene, 5-(5-hexenyl)-2-norphene, 5-(1-methyl-4-pentenyl)-2-norphene, 5-(2,3-dimethyl-3-butenyl)-2-norphene, and 5-(2-ethylidene-2-norphene). Examples of norepinephrine include 5-(6-heptenyl)-2-northene, 5-(3-methyl-5-hexenyl)-2-northene, 5-(3,4-dimethyl-4-pentenyl)-2-northene, 5-(3-ethyl-4-pentenyl)-2-northene, 5-(7-octenyl)-2-northene, 5-(2-methyl-6-heptenyl)-2-northene, 5-(1,2-dimethyl-5-hexenyl)-2-northene, 5-(5-ethyl-5-hexenyl)-2-northene, and 5-(1,2,3-trimethyl-4-pentyl)-2-northene. Among these, ENB is preferred due to its high ease of acquisition, ease of controlling the crosslinking rate during hydrogen-silicone crosslinking, and ease of obtaining good mechanical properties. One or more non-conjugated polyenes (CX) may be used. When the copolymer (S) of this state contains constituent units derived from non-conjugated polyenes (CX), the mass percentage concentration relative to the total constituent units constituting the copolymer (S) is preferably 0-20% by mass, more preferably 0-8% by mass, and even more preferably 0.01-8% by mass. The requirement (i) is that in the copolymer (S) of this state sample, the ratio [A] / [B] of the mole number of constituent units derived from ethylene (A) to the mole number of constituent units derived from α-olefin (B) satisfies 40 / 60~99.9 / 0.1. The ratio of [A] / [B] is preferably 50 / 50~90 / 10, more preferably 55 / 45~85 / 15, and even more preferably 55 / 45~78 / 22. The foam obtained by hydrosilicone crosslinking of the copolymer (S) satisfies requirement (i), exhibiting superior rubber elasticity, mechanical strength, and flexibility, and is therefore preferred. Furthermore, the ratio [A] / [B] of the mole number [A] of the constituent units derived from ethylene (A) to the mole number [B] of the constituent units derived from α-olefin (B) in the copolymer (S) can be determined by... 13 Obtained by C-NMR. Requirement (ii) states that in a specific copolymer (S), the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the copolymer (S) is 0.07 to 10% by mass. The mass percentage concentration of constituent units derived from non-conjugated polyenes (C) is preferably 0.1 to 8.0% by mass, more preferably 0.5 to 5.0% by mass. Relative to the total mass of the copolymer (S), the total content of constituent units derived from ethylene (A), constituent units derived from α-olefins (B), and constituent units derived from non-conjugated polyenes (C) in the copolymer (S) does not exceed 100% by mass. The copolymer (S) is preferred because, by satisfying requirement (ii), the foam obtained from the copolymer composition of this state sample has sufficient hardness and superior mechanical properties. Furthermore, when the copolymer (S) is crosslinked with hydrosilicone, the faster crosslinking rate allows for efficient foam production, which is also preferred. Moreover, the mass percentage concentration of the constituent units derived from the non-conjugated polyene (C) in the copolymer (S) can be determined by... 13 The content of constituent units derived from ethylene (A) and α-olefins (B) with carbon numbers of 3-20 in the copolymer (S) can also be determined by C-NMR. 13 Obtained by C-NMR. The copolymer (S) of this state preferably satisfies, in addition to the above requirements (i) and (ii), the following requirements (iii) to (v). Hereinafter, the copolymer (S) that satisfies all requirements (i) to (v) is sometimes referred to as copolymer (S1). (iii) The (n) obtained according to the following formula (1) C (n) is 4.5 or higher and 40 or lower. C= (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). (iv) Complex viscosity η at frequency ω = 0.1 rad / s obtained by linear viscoelasticity determination (190 °C) using a rheometer. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the aforementioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the aforementioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S)) satisfy the following equation (2). P / ([η]) 2.9 )≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) (v) Number of long chain branches per 1000 carbon atoms obtained using 3D-GPC (LCB) 1000C The natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3). 1000C ≦1-0.07×Ln(Mw) ‧‧‧Formula (3). Requirement (iii) is obtained according to the following formula (1) (n C The specific range is 4.5 or higher and 40 or lower. (n) C= (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight-average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). Furthermore, (Mw) is the weight-average molecular weight of polystyrene determined using gel permeation chromatography (GPC). (n C The preferred value is 4.5 or higher and 40 or lower, and the even better value is 4.5 or higher and 35 or lower. The result obtained from equation (1) above is (n) C ), which is the weight average molecular weight (Mw) of the copolymer (S) and the number of constituent units derived from non-conjugated polyenes (C) per unit. (n) C When the value is above the lower limit, a sufficient crosslinking rate is easily obtained during hydrogen-silicone crosslinking. Furthermore, when the value is below the upper limit, over-crosslinking is less likely to occur, resulting in a foam exhibiting superior mechanical properties. When condition (iii) is met, the copolymer (S) has a low content of long-chain branches and a fast hydroxyl crosslinking rate, resulting in a foam with excellent balance of mechanical and physical properties. It also exhibits particularly superior heat aging resistance due to the low likelihood of post-crosslinking. Therefore, it is considered superior. When the copolymer (S) contains constituent units (CX), the following equation (1') yields (n) C+cx The preferred value is 4.5 or higher and 40 or lower; even better is 4.5 or higher and 35 or lower. (n) C+cx = (Mw) × [{(C) mass percentage concentration / 100} / (C) molecular weight + {(CX) mass percentage concentration / 100} / (CX) molecular weight] ‧‧‧(1') The result (n) obtained from the above formula (1') C+cx ), is the sum of the number of constituent units derived from non-conjugated polyenes (C) and the number of constituent units derived from non-conjugated polyenes (CX) per unit of the weight average molecular weight (Mw) of the copolymer (S). Requirement (iv) is the complex viscosity η of a specific copolymer (S) obtained by linear viscoelasticity measurement (190°C) using a rheometer at a frequency of ω = 0.1 rad / s. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the aforementioned non-conjugated polyene (C) (the content of the constituent units derived from the aforementioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S): mass%) satisfy the following equation (2). P / ([η]) 2.9 )≦(C) of mass percentage concentration × 6 ‧‧‧Equation (2) The rheometer system uses the Ares (Rheometric Scientific) viscoelastic measuring apparatus, and measurements are performed at 190°C, with a strain of 1.0% and varying frequency. The limiting viscosity [η] refers to the value measured in decahydronaphthalene at 135°C. The copolymer (S) preferably satisfies the following equation (2'). P / ([η]) 2.9 )≦(C) mass percentage concentration × 5.7 ‧‧‧Equation (2') ratio P(η ✽ (ω=0.1) / η ✽ (ω=100) The ) represents the frequency dependence of viscosity, and P / ([η] on the left side of equations (2) and (2') 2.9 Although affected by factors such as short chain branching or molecular weight, it tends to show higher values ​​when there are more long chain branches. Generally speaking, in ethylene-α-olefin-nonconjugated polyene copolymers, the more constituent units derived from nonconjugated polyenes there are, the more long-chain branches there tend to be. However, the copolymer (S) of the present invention has fewer long-chain branches than conventional ethylene-α-olefin-nonconjugated polyene copolymers, and therefore can satisfy the above formula (2). Requirement (v) refers to the number of long-chain branches (LCB) per 1000 carbon atoms in a specific copolymer (S) obtained using 3D-GPC. 1000C The natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3). 1000C ≦1-0.07×Ln(Mw) ‧‧‧Formula (3). Equation (3) above defines the upper limit of the long-chain branch content per unit carbon number in a specific copolymer (S). That is, requirement (v) indicates that the copolymer (S) has a lower proportion of long-chain branches. By satisfying requirement (v), the copolymer (S) exhibits superior curing characteristics during hydrogen-silicone crosslinking. Furthermore, the resulting foaming system demonstrates superior heat aging resistance. Preferably, the copolymer (S) satisfies the following equation (3'). LCB 1000C ≦1-0.071×Ln(Mw)...Equation (3') In equation (3) and equation (3'), Mw and (LCB) 1000C The values ​​were obtained using 3D-GPC via structural analysis. Specifically, the absolute molecular weight distribution was determined using a PL-GPC220 3D-high temperature GPC apparatus (manufactured by Polymer Laboratories), and the limiting viscosity was determined using a viscometer. The main measurement conditions are as follows. Detectors: Differential refractometer / GPC device with built-in 2-angle light scattering photometer PD2040 (manufactured by Precison Detectors); Bridge viscometer PL-BV400 (manufactured by Polymer Laboratories) Column: TSKgel GMH HR -H(S)HT×2 sticks + TSKgel GMH HR -M(S) × 1 piece (each piece is a single piece with an inner diameter of 7.8 mm and a length of 300 mm) Temperature: 140℃ Mobile phase: 1,2,4-trifluorobenzene (containing 0.025% BHT) Injection volume: 0.5 mL Sample concentration: Ca 1.5 mg / mL Sample filtration: Filtered through a sintered filter with a pore size of 1.0 μm The dn / dc value necessary to determine the absolute molecular weight is determined based on the dn / dc value of 0.053 for standard polystyrene (molecular weight 190,000) and the response intensity of the differential refractometer per unit injection mass, depending on the individual sample. The long-chain branching parameter g'i of each eluent component is calculated by formula (v-1) based on the relationship between the limiting viscosity obtained by the viscometer and the absolute molecular weight obtained by the light scattering spectrophotometer. [Number 1] [η]i,br): The measured limiting viscosity of the i-th slice component. [η]i,lin): The limiting viscosity assuming the i-th slice component does not have long-chain branching structure and only shows short-chain branching structure. Here, [η]=KM is applied. v The relationship is v=0.725. Furthermore, g' is calculated from the average values ​​of (v-2), (v-3), and (v-4). Also, the trendline, assuming only short-chain branches, is determined individually for each sample. [Number 2] C i Concentration M of each extracted component i Absolute molecular weight of each extracted component Further calculations using g'w yielded the number of branch points per molecule (BrNo) and the number of branches per 1000 carbon atoms in the long chain (LCB). 1000C The branching degree λ per unit molecular weight. BrNo calculated this using the Zimm-Stockmayer formula (v-5), and LCB 1000C The calculation of λ uses equations (v-6) and (v-7). g is the long-chain branching parameter obtained from the radius of inertia Rg, and the following simple correlation is applied between it and g' obtained from the limiting viscosity. ε in the equation proposes various values ​​depending on the molecular morphology, and the calculation is performed under the assumption that ε=1 (i.e., g'=g). [Number 3] λ=BrNo / M…(V-6) LCB 1000C =λ×14000…(V-7) In formula (V-7), 14000 represents the methylene group (CH4). 2 (Unit: 1000 parts) Molecular weight. The limiting viscosity [η] of the copolymer (S) is preferably 0.1~5 dL / g, more preferably 0.5~5.0 dL / g, and even more preferably 0.5~4.0 dL / g. The weight average molecular weight (Mw) of the copolymer (S) is preferably 10,000~600,000, more preferably 30,000~500,000, and even more preferably 50,000~400,000. In this sample, the method for manufacturing the copolymer (S) is not particularly limited, but it is preferably obtained by copolymerizing the monomers in the presence of a ferrocene compound, and more preferably by copolymerizing the monomers in the presence of a catalyst system containing a ferrocene compound. Specifically, for example, it can be manufactured by the method described in International Patent Publication No. 2015 / 122495. [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) of the present invention is an organo-based hydrogen polysiloxane having at least one silicon atom bonded to an aryl group and at least two silicon atoms bonded to hydrogen atoms within the molecule, as shown in formula (a). The copolymer composition of this state may also contain two or more hydrogen-containing silicon compounds (Y). [Chemistry 8] In equation (a), n and p are 0 or positive numbers, m is a number in the range of 1 to 20, and the sum of n, m, and p is 5 to 50. 1 and R 2 Each is an independent monovalent alkyl group, and they can be the same or different. R a R is an aryl alkyl group, and R is selected from R 1 R 2 , hydrogen atom or R a The basis. Where n=1, at least one of R is a hydrogen atom, and n=0, both R are hydrogen atoms. This type of hydrogen-containing silicone compound (Y) is a silicone with a low degree of polymerization and an organic-based hydrogen polysiloxane having a straight-chain structure with at least one silicon atom bonded to an aralkyl group and at least two silicon atoms bonded to hydrogen atoms within the molecule. By selectively combining hydrogen-containing silicon-based compounds (Y) with copolymers (S), molded articles with particularly superior physical properties such as char resistance, formability, elongation at break, and compression molding strain can be obtained, which can especially improve the applicability to materials such as weatherstripping and sponge materials. In formula (a), m is the number of diorganosiloxy units with alkyl groups bonded by silicon atoms, which is in the range of 1 to 20, or in the range of 2 to 10, and preferably in the range of 3 to 6. In formula (a), n is the number of organic hydroxyl groups with side chains bonded to hydrogen atoms, which can be 0 or 1. When n=1, at least one of R is a hydrogen atom. When n=0, both R are hydrogen atoms, resulting in a structure with at least two silicon atoms bonded to hydrogen atoms in the molecule. Furthermore, even if n is a number other than 0 or 1, it is not a problem if one or both of the R atoms at the two ends of the molecular chain are silicon atoms bonded to hydrogen atoms. Moreover, n is preferably a number other than 0 or 1, and even more preferably a number where n ≥ m. More specifically, n can be a number in the range of 3 to 10, and particularly preferably a number in the range of 3 to 9. In formula (a), p is the number of two organosiloxane units that do not contain aralkyl or silicon atoms bonded to hydrogen atoms. It can be 0, and can be a range of values ​​where the total degree of polymerization of the two organosiloxane units, expressed as the sum of n, m, and p (described later), is subtracted from the values ​​of n and m. For example, p can be a value in the range of 0 to 12, a number in the range of 0 to 10, a number in the range of 0 to 5, and preferably a number in the range of 0 to 2. The hydrogen-containing silicone compound (Y) can be a siloxane with a low degree of polymerization. The sum of the values ​​of n, m, and p mentioned above is 5 to 50, preferably 5 to 20, and can also be 5 to 15. In the hydrogen-containing silicone compound (Y) belonging to the crosslinking agent of the present invention, it is particularly preferred that m is in the range of 3 to 6, n is in the range of 3 to 9, and p is in the range of 0 to 2. In equation (a), R is selected from R 1 R 2 , hydrogen atom and R a Either of the bases. Where n=0 or 1, one or both of R are hydrogen atoms. R in the formula... 1 R 2 It is a monovalent alkyl group, which can be the same or different, and some of the carbon atoms are bonded to hydrogen atoms, which can also be replaced by halogen atoms. This type of alkyl group can be an alkyl group with 1 to 20 carbon atoms, and industrially it can be a methyl group. In equation (a), R a It is an aralkyl group, which may be an aralkyl group with 7 to 20 carbon atoms, and more preferably an aralkyl group with 7 to 15 carbon atoms. Examples of such aralkyl groups include benzyl, phenethyl, phenylpropyl, phenylbutyl, etc., and it is particularly preferred that the alkyl group between the aryl group such as phenyl and the silicon atom contains at least one group consisting of -CH(CH) 3) - Aryl group of the branch unit shown. In this invention, the preferred R group a For -CH 2-CH(CH 3)-C 6H Aryl groups as shown in Figure 5. The aralkyl group is a characteristic functional group that endows the hydrogen-containing silicon compound (Y) with the effectiveness of crosslinking agent. In particular, since the aralkyl group and silicon atom are bonded to hydrogen atoms in this component within the above range, the physical properties of the resulting molded article are significantly improved. [Platinum-based catalysts] Platinum-based catalysts for hydrosilicone crosslinking are widely used in the hydrosilicone crosslinking reaction accompanying the addition reaction of silicon atoms to carbon-carbon double bonds. If the platinum-based catalyst for hydrosilicone crosslinking is an addition reaction catalyst that promotes the addition reaction between the alkenyl group of the copolymer (S) and the hydrosilyl group of the hydrosilyl-containing compound (Y) (hydrosilylation reaction of the alkene), it can be used without particular restrictions. Specifically, platinum-based catalysts are typically known materials used in addition-curing processes, such as the micro-powdered platinum catalyst described in U.S. Patent No. 2,970,150, the platinum chloride catalyst described in U.S. Patent No. 2,823,218, the platinum-hydrocarbon complexes described in U.S. Patent No. 3,159,601 and U.S. Patent No. 159,662, the platinum chloride-olefin complexes described in U.S. Patent No. 3,516,946, and the platinum-vinylsiloxane complexes described in U.S. Patent No. 3,775,452 and U.S. Patent No. 3,814,780. More specifically, examples include platinum monomers (platinum black), platinum chloride, platinum-olefin complexes, platinum-alcohol complexes, or platinum-based catalysts supported on alumina, silicon dioxide, or other carriers. The copolymer composition of this state may also contain two or more platinum-based catalysts. [Blowing Agent] The copolymer composition of this sample may also contain a blowing agent. Examples of blowing agents include sodium bicarbonate-based blowing agents, ADCA (azodicarboxylic acid), DPT (N,N'-dinitrospentamethylenetetramine), and OBSH (4,4'-oxobis(benzenesulfonylhydrazine)). Among these, sodium bicarbonate-based blowing agents are preferred because they allow for lower specific gravity and higher crosslinking density in the foamed molded body. [Reaction Inhibitor] The copolymer composition of this state may also contain a reaction inhibitor. The reaction inhibitor is a compound that inhibits the cross-linking reaction (hydrosilylation addition reaction of the alkene) between the alkenyl group of the copolymer (S) and the hydrosilyl group of the hydrosilyl compound (Y). The formulation of a reaction inhibitor is preferable in terms of stabilizing the processability of the composition during mixing and molding. Specific examples of reaction inhibitors include benzotriazole; acetylenols such as 1-hexyn-3-ol, 3-methyl-1-butyn-3-ol, 3,6-dimethyl-4-octylen-3,6-diol, 2,4,7,9-tetramethyl-5-decyn-4,7-diol, 1-ethynylcyclohexanol, and 3,5-dimethyl-1-hexyn-3-ol; acrylonitrile; N,N-diallyl acetylamine, N,N-di... Acrylamine compounds such as allylbenzamide, N,N,N',N'-tetraallyl-o-phthalic acid diamide, N,N,N',N'-tetraallyl-m-phthalic acid diamide, and N,N,N',N'-tetraallyl-p-phthalic acid diamide; and other organic peroxides such as sulfur, phosphorus, nitrogen, amine compounds, sulfur compounds, phosphorus compounds, tin, tin compounds, tetramethyltetravinylcyclotetrasiloxane, and hydrogen peroxide. Among these compounds, 3,5-dimethyl-1-hexyn-3-ol is particularly preferred. The copolymer composition of this state may also contain two or more reaction inhibitors. [Antioxidants] The copolymer composition of this sample may also contain antioxidants. Hindered phenolic antioxidants are preferred. By including hindered phenolic antioxidants in the copolymer composition of this sample, foamed molded articles with higher water absorption and superior compression set can be obtained. The copolymer composition of this sample may also contain two or more antioxidants. Examples of hindered phenolic antioxidants include 2,4,6-tris(3',5'-ditert-butyl-4'-hydroxybenzyl)trimethylbenzene (manufactured by ADEKA, trade name: ADK STAB AO-330, melting point: 243~245℃), 1,3,5-tris(3,5-ditert-butyl-4-hydroxybenzyl)-1,3,5-tris(2,4,6(1H, 3H, 5H)-trione (manufactured by ADEKA, trade name: ADK STAB AO-20, melting point: 220~222℃), and 4,4'-butylenebis(6-tert-butyl-m-cresol) (manufactured by ADEKA, trade name: ADK STAB). AO-40 (melting point: 210~214℃), N,N'-bis{3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl}hydrazine (manufactured by BASF JAPAN, trade name: Irganox MD1024, melting point: 224~229℃), neopentyl tert-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (manufactured by BASF JAPAN, trade name: Irganox 1010, melting point: 110~130℃), dibutylhydroxytoluene, 2,5-di-tert-butylhydroquinone (manufactured by Ouchi Shinsei Chemical Co., Ltd., trade name: NOCRAC NS-7, melting point: above 200℃), etc. [Anti-aging Agent] The copolymer composition of this sample may also contain an anti-aging agent. Commonly known anti-aging agents used in general rubber compositions can be used as anti-aging agents. Examples include sulfur-based and amine-based anti-aging agents. Anti-aging agents can be used alone, but it is preferable to use two or more in combination to maintain heat aging resistance at high temperatures and over long periods. The sulfur-based anti-aging agent is preferably used in the range of 0.2 to 10 parts by weight relative to 100 parts by weight of the copolymer (S), more preferably in the range of 0.2 to 8 parts by weight, and even more preferably in the range of 0.2 to 6 parts by weight. If the sulfur-based anti-aging agent is used within the above range, the effect of improving heat aging resistance is greater and it does not hinder the crosslinking of the copolymer components, which is therefore better. The amine-based anti-aging agent is preferably used in the range of 0.05 to 5 parts by weight, more preferably 0.1 to 4 parts by weight, and even more preferably 0.2 to 3 parts by weight, relative to 100 parts by weight of the copolymer (S). Using the amine-based anti-aging agent within the above range results in a significant improvement in heat aging resistance without hindering the crosslinking of the copolymer components, and is therefore preferable. [Reinforcing Agent] The copolymer composition of this sample may also contain a reinforcing agent to improve properties such as tensile stress at break and tensile elongation at break. The reinforcing agent is a known rubber reinforcing agent formulated into the rubber composition, specifically including, for example, carbon black, carbon black surface-treated with silane coupling agents, silicon dioxide, calcium carbonate, activated calcium carbonate, micronized talc, and micronized silica. The copolymer composition of this sample may also contain two or more reinforcing agents. [Softener] The copolymer composition of this sample may also contain a softener. The softener is a known softener formulated into the rubber composition. Specific examples include petroleum-based softeners such as processing oils, lubricating oils, paraffin oils, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar-based softeners such as coal tar; fatty oil-based softeners such as castor oil, linseed oil, rapeseed oil, soybean oil, and coconut oil; waxes such as beeswax and palm wax; naphthenic acids, pine oil, rosin, or their derivatives; synthetic polymers such as terpene resins, petroleum resins, and lavender resins; ester-based softeners such as dioctyl phthalate and dioctyl adipate; and others such as microcrystalline wax, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon-based synthetic lubricating oils, tall oils, and substitute rubbers (oil-based rubbers). Among these, petroleum-based softeners are preferred, and paraffin-based processing oils are particularly preferred. The copolymer composition of this sample may also contain two or more softening agents. [Desiccant] The copolymer composition of this sample may also contain a desiccant. Examples of desiccant include calcium oxide, silicone, sodium sulfate, molecular sieves, zeolite, and white carbon. Among these, calcium oxide is preferred. The amount of desiccant relative to 100 parts by weight of the copolymer (S) is preferably 0.5 to 15 parts by weight, more preferably 1.0 to 12 parts by weight, and even more preferably 1.0 to 10 parts by weight. The copolymer composition of this sample may also contain two or more desiccants. [Organic peroxides] The copolymer composition of this sample may also contain organic peroxides. Examples of organic peroxides include diisophenylpropyl peroxide (DCP), ditert-tert-butyl peroxide, 2,5-di(tert-butylperoxy)hexane, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyn-3, 1,3-bis(tert-butylperoxyisopropyl)benzene, 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, n-butyl-4,4-bis(tert-butylperoxy)valerate, benzylmethoxyperoxide, p-chlorobenzoylperoxide, 2,4-dichlorobenzoylperoxide, tert-butylperoxybenzoate, tert-butylperoxyisopropyl carbonate, diacetylperoxide, laurylperoxide, and tert-butylisophenylpropyl peroxide. [Crosslinking Aid] The copolymer composition of this sample may also contain a crosslinking aid along with the organic peroxide. Specific examples of crosslinking aids include sulfur; quinone dioxime compounds such as p-quinone dioxime; methacrylate compounds such as polyethylene glycol dimethacrylate; allyl compounds such as diallyl phthalate and triallyl cyanurate; maleic diimide compounds; and divinylbenzene. This crosslinking aid is preferably used at a rate of 0.5 to 2 moles, more preferably about 1 mole, relative to 1 mole of the organic peroxide used. [Fillers] To reduce formulation costs, the copolymer composition of this sample may also contain fillers. Examples of fillers include talc and clay. One filler may be used alone, or two or more may be used. The filler is preferably used in the range of 1 to 500 parts by weight relative to 100 parts by weight of the copolymer (S), more preferably 1 to 400 parts by weight, and even more preferably 1 to 300 parts by weight. If the filler dosage is within the above range, the tensile strength, tear strength, and wear resistance of the resulting molded article can be improved. [Processing Aids] The copolymer composition of this sample may also contain processing aids. Processing aids can be widely used that are commonly formulated into rubber as processing aids. Specific examples include castor oil acid, stearic acid, palmitic acid, lauric acid, barium stearate, zinc stearate, calcium stearate, zinc laurate, or esters. These processing aids may be a single type or two or more. The processing aid is preferably formulated at a rate of 30 parts by weight or less, more preferably 25 parts by weight or less, and even more preferably 20 parts by weight or less per 100 parts by weight of the copolymer (S). If the amount of processing aid is within the above range, the processability, such as mixing processability, extrusion processability, and injection molding processability, is superior. [Active Agent] The copolymer composition of this sample may also contain an active agent. Examples of active agents include glycols such as polyethylene glycol and diethylene glycol; amines such as di-n-butylamine and triethanolamine. These active agents may be a single type or two or more types. The active agent is preferably formulated in the range of 0.2 to 15 parts by weight, more preferably 0.3 to 10 parts by weight, and even more preferably 0.5 to 8 parts by weight, relative to 100 parts by weight of the copolymer (S). [Other formulations, etc.] In addition to the above-mentioned components, the copolymer composition of this sample may be appropriately formulated with well-known rubber formulations, such as metal salts of α,β-unsaturated organic acids, crosslinking accelerators, processing aids, plasticizers, adhesive agents, etc., without compromising the purpose of this sample. [Other Resins] The copolymer composition of this sample may also contain resins or rubbers other than copolymer (S) to the extent that it does not impair the effect of this sample. The amount of resins or rubbers other than copolymer (S) relative to 100 parts by weight of copolymer (S) is preferably 50 parts by weight or less, more preferably 30 parts by weight or less, and even more preferably not blended. Examples of resins other than copolymers (S) include general-purpose resins such as polyethylene, polypropylene, and polystyrene. Examples of rubbers include polysiloxane rubber, ethylene-propylene random copolymer rubber (EPR), natural rubber, styrene-butadiene rubber, isoprene rubber, butadiene rubber, and chloroprene rubber. [Formulation] In the copolymer composition of this sample, the amount of hydrogen-containing silicon compound (Y) relative to 100 parts by mass of copolymer (S) is preferably 0.1 to 100 parts by mass, more preferably 0.1 to 75 parts by mass, even more preferably 0.1 to 50 parts by mass, still more preferably 0.2 to 30 parts by mass, even more preferably 0.2 to 20 parts by mass, particularly preferably 0.5 to 10 parts by mass, and most preferably 0.5 to 5 parts by mass. In the copolymer composition of this sample, the amount of platinum-based catalyst is preferably 0.001 to 10 parts by mass, more preferably 0.005 to 5.0 parts by mass, even more preferably 0.01 to 3.0 parts by mass, even more preferably 0.02 to 1.0 parts by mass, even more preferably 0.03 to 0.7 parts by mass, particularly preferably 0.05 to 0.6 parts by mass, and most preferably 0.1 to 0.5 parts by mass, relative to 100 parts by mass of the copolymer (S). [Effects] Because the crosslinking reaction of this copolymer composition is suppressed at lower temperatures (e.g., 50-130°C) during mixing and molding, it can inhibit scorching (or early, unintended crosslinking) caused by heat during processing or storage. Furthermore, at crosslinking temperatures (e.g., 150-200°C), it can crosslink in a short time with superior crosslinking characteristics. Therefore, by employing various known molding methods, it is possible to mold copolymer compositions at a higher speed than conventional copolymer compositions. <Second State Sample> The copolymer composition of the second state sample of the present invention contains a copolymer (S), a hydrogen-containing silicon-based compound (Y), a platinum-based catalyst, and a sodium bicarbonate-based foaming agent. The copolymer composition of the second state sample of the present invention may further contain a reaction inhibitor. It may also contain a hindered phenolic antioxidant. Furthermore, the foamed molding system of the second state sample of the present invention is a molded body composed of a foamed body in which the copolymer composition of the second state sample is crosslinked and foamed. Furthermore, the method for manufacturing the foamed molded body of the second state sample of the present invention is characterized in that: the copolymer composition of the second state sample of the present invention is melt-extruded and crosslinked in a hot air vulcanizing tank. [Copolymer (S)] The copolymer (S) of this state sample is the same as that of the copolymer (S) of the first state sample, and the preferred state sample is also the same as that of the first state sample. That is, it has the constituent units derived from ethylene (A), the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms, and the constituent units derived from non-conjugated polyenes (C) as described in the first state sample, and satisfies the above requirements (i) and (ii). The copolymer composition of this state sample may also contain two or more copolymers (S). [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) in the copolymer composition of this sample is the same as that in the first sample. That is, the hydrogen-containing silicon compound (Y) in this sample has the same structural features as described in the first sample. The preferred state of the hydrogen-containing silicon compound (Y) in this sample is the same as that in the first sample. The copolymer composition of this sample may also contain two or more hydrogen-containing silicon compounds (Y). [Platinum-based catalyst] The platinum-based catalyst used for hydrosilicone crosslinking in this sample is the same as the platinum-based catalyst used for hydrosilicone crosslinking in the first sample, and also the same as in the preferred sample. The copolymer composition of this sample may also contain two or more platinum-based catalysts. [Sodium bicarbonate-based foaming agent] The sodium bicarbonate-based foaming agent in the copolymer composition of this sample is a sodium bicarbonate-based foaming agent that satisfies the following condition (b): (b) In the cumulative distribution curve based on the number of roughnesses, the cumulative roughness of 10% is 0.9 or less, and in the cumulative distribution curve based on the number of equivalent circle diameters, the cumulative equivalent circle diameter of 90% is 43 μm or more. The copolymer composition of this sample may also contain two or more sodium bicarbonate-based foaming agents. The concavity / convexity in requirement (b) is the ratio of the envelope perimeter to the circumference, determined by dynamic image analysis using methyl ethyl ketone as the dispersion solvent. The circumference is the length of the projected outline of the particle, and the envelope perimeter is the length around the shortest connection of the particle's convex parts. Furthermore, the equivalent circle diameter refers to the diameter of a circle with an area equal to the projected area of ​​the particle. When the cumulative roughness is below 0.9 (10%), it means that the particles contain a certain degree of relatively small roughness (or relatively large roughness). When the cumulative equivalent circle diameter is above 43 μm (90%), it means that the particles contain a certain degree of relatively large equivalent circle diameter. The perimeter and envelope perimeter used to determine the convexity, and the projected area of ​​the particle used to determine the equivalent circle diameter, were measured using a particle shape image analysis device PITA3 (manufactured by SEISHIN Corporation) with MEK as the dispersion solvent, by dynamic image analysis (wet method, 4x magnification). Commercially available sodium bicarbonate foaming agents that meet requirement (b) include, for example, Cellborn FE-507R (trade name) manufactured by Yung-Ho Chemical Industry Co., Ltd. [Formulating agents, etc.] Reaction inhibitors, antioxidants, anti-aging agents, reinforcing agents, softeners, hygroscopic agents, organic peroxides, crosslinking aids, fillers, processing aids, activators, and other formulating agents, as well as other resins, may be appropriately formulated as in the first state. [Formulation] In the copolymer composition of this state sample, the preferred formulation amount of the hydrogen-containing silicon compound (Y) relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. Furthermore, in the copolymer composition of this state sample, the preferred formulation amount of the platinum-based catalyst relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. In the copolymer composition of this sample, the amount of sodium bicarbonate-based foaming agent relative to 100 parts by weight of copolymer (S) is preferably 0.001 to 10 parts by weight, more preferably 0.01 to 9 parts by weight, even more preferably 0.1 to 8 parts by weight, still more preferably 0.5 to 7.5 parts by weight, even more preferably 1.0 to 7.0 parts by weight, particularly preferably 1.5 to 6.5 parts by weight, and most preferably 1.5 to 6.0 parts by weight. In the copolymer composition of this sample, the amount of reaction inhibitor relative to 100 parts by mass of copolymer (S) is preferably 0-2 parts by mass, more preferably 0-1.8 parts by mass, even more preferably 0-1.6 parts by mass, even more preferably 0-1.4 parts by mass, even more preferably 0-1.2 parts by mass, particularly preferably 0-1.0 parts by mass, and most preferably 0-0.8 parts by mass. In the copolymer composition of this sample, the amount of hindered phenolic antioxidant is preferably 0.07 to 10 parts by mass, more preferably 1 to 8 parts by mass, and even more preferably 1 to 4 parts by mass, relative to 100 parts by mass of copolymer (S). In the copolymer composition of this sample, the amount of reinforcing agent is preferably 70-200 parts by mass, more preferably 70-150 parts by mass, relative to 100 parts by mass of copolymer (S). In the copolymer composition of this sample, the amount of softening agent is preferably 60-120 parts by mass, more preferably 60-110 parts by mass, relative to 100 parts by mass of copolymer (S). [Foamed Molded Articles] When obtaining a molded article composed of a foamed body formed by cross-linking and foaming a copolymer composition in this state, a known general processing method for rubber formulations (molding method) can be used. Specifically, it is as follows: Using a closed mixing machine such as a Banbury mixer, kneader, or intermixer, for example, the copolymer (S) and other components are mixed at 80~170°C for 3~10 minutes. Then, a hydrogen-containing silicone compound (Y), platinum catalyst, reaction inhibitor, reinforcing agent, softener, and sodium bicarbonate foaming agent are added in the amounts within the above range, and other formulation agents or other rubbers or resins are added as needed. Using open rollers or a kneader, the mixture is mixed at a roller temperature of 50~130°C for 5~30 minutes. It can then be formulated by pressing. In this way, a strip or sheet composition can usually be obtained. The resulting composition system can be pre-formed into the desired shape by various forming methods such as extrusion molding machine, burnishing roller, press, injection molding machine, transfer molding machine, etc., or the molded article can be introduced into a vulcanizing tank for heating and cross-linking at the same time as forming, thereby obtaining a foamed molded article composed of a foamed body that cross-links and foams the copolymer composition. As a heating method, any known method can be used without limitation. Preferably, a heating bath using hot air, a fluid bed of glass beads, UHF (ultra-short wave electromagnetic waves), steam, or LCM (thermal molten salt bath) is used, heating at 150-200°C for 1-30 minutes. During molding and cross-linking, molds may or may not be used. When molds are not used, the rubber composition is typically molded, cross-linked, and foamed continuously. The foamed molded body obtained from the copolymer composition of this sample can be used for various applications. Specifically, it is suitable for applications such as high-density foam sealants, automotive sealants, civil engineering and building sealants, and various industrial sealants. It is particularly suitable for weatherproofing foam materials (preferably with a foaming ratio of 1.3 to 4.0 times). It is also suitable for high-density foam materials used in materials such as sponges and rubber strips (preferably with a foaming ratio of more than 3.0 and less than 30 times). Examples of such foamed molded bodies include weatherproofing foam materials such as door seam sealing foam, car door frame sealing foam, hood sealing foam, and trunk sealing foam; and high-density foam materials such as heat insulation foam and rubber strips. [Effects] The foamed articles obtained from the copolymer composition of this sample exhibit superior sponge properties, including low specific gravity and high water absorption. Furthermore, the compression set is relatively small. The reason for this is not yet fully understood, but it is believed that by including a sodium bicarbonate-based foaming agent that satisfies requirement (b) in the copolymer composition of this sample, the crosslinking reaction and the decomposition reaction of the foaming agent occur simultaneously, and it is also believed that this is due to the ease with which the crosslinking density can be increased. <Third State Sample> The copolymer composition of the third state sample of the present invention comprises: a copolymer (S1) of the preferred state sample represented as copolymer (S) in the first state sample, and a copolymer with a limiting viscosity [η] of 2.0 to 4.0 dL / g; a hydrogen-containing silicon-based compound (Y); a platinum-based catalyst; carbon black; a paraffin-based processing oil; and a reaction inhibitor as needed. Furthermore, the composition, excluding the hydrogen-containing silicon-based compound (Y), the catalyst, and the reaction inhibitor, has a Munich viscosity "ML(1+4)100°C" of 8 to 200 obtained by the method described in JIS K 6300-1:2013. Furthermore, the crosslinked molded body of the third state sample of the present invention is characterized by being obtained by crosslinking the copolymer composition of the third state sample. [Copolymer (S)] The copolymer (S) of this state sample is copolymer (S1) and its limiting viscosity [η] is within a specific range. That is, it has the constituent units derived from ethylene (A), α-olefins (B) with 3 to 20 carbon atoms, and non-conjugated polyenes (C) as described in the first state sample, and in addition to the above requirements (i) and (ii), it also satisfies the above requirements (iii) to (v), and its limiting viscosity [η] is 2.0 to 4.0 dL / g. With the limiting viscosity [η] of the copolymer (S) being 2.0~4.0 dL / g, the Munich viscosity "ML(1+4)100℃" obtained by mixing components other than the hydrogen-containing silicon compound (Y), catalyst, and reaction inhibitor, as described in JIS K 6300-1:2013, can be easily adjusted to the range of 8~200. The limiting viscosity [η] of the copolymer (S) in this state is preferably 2.2~3.5 dL / g, more preferably 2.4~3.0 dL / g. The copolymer (S) in this sample is copolymer (S1), and except for the specified range of limiting viscosity, it is the same as the copolymer (S) in the first sample, including the preferred sample. The copolymer composition of this sample may also contain two or more copolymers (S1) with limiting viscosity [η] in the above range. [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) in the copolymer composition of this sample is the same as that in the first sample. That is, the hydrogen-containing silicon compound (Y) in this sample has the same structural features as described in the first sample. The preferred state of the hydrogen-containing silicon compound (Y) in this sample is the same as that in the first sample. The copolymer composition of this sample may also contain two or more hydrogen-containing silicon compounds (Y). [Platinum-based catalyst] The platinum-based catalyst used for hydrosilicone crosslinking in this sample is the same as the platinum-based catalyst used for hydrosilicone crosslinking in the first sample, and also the same as in the preferred sample. The copolymer composition of this sample may also contain two or more platinum-based catalysts. [Reinforcing Agent] The copolymer composition of this sample contains carbon black as a reinforcing agent. The copolymer composition of this sample preferably contains 20% by mass or more, more preferably 30% by mass or more, and most preferably only carbon black, relative to the total reinforcing agent contained therein. The carbon black may also be surface-treated using a silane coupling agent. [Softener] The copolymer composition of this sample contains paraffinic processing oil as a softener. The copolymer composition of this sample preferably contains 5% by mass or more, more preferably 10% by mass or more, of paraffinic processing oil relative to the total softener contained therein, and most preferably contains only paraffinic processing oil. Examples of softeners other than paraffin-based processing oils include petroleum-based softeners such as processing oils, lubricating oils, paraffin oils, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar-based softeners such as coal tar; fatty oil-based softeners such as castor oil, linseed oil, rapeseed oil, soybean oil, and coconut oil; waxes such as beeswax and palm wax; naphthenic acids, pine oil, rosin, or their derivatives; synthetic polymers such as terpene resins, petroleum resins, and lavender resins; ester-based softeners such as dioctyl phthalate and dioctyl adipate; and others such as microcrystalline waxes, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon-based synthetic lubricating oils, tall oils, and substitute rubbers (oil-based rubbers). [Formulating agents, etc.] Reaction inhibitors, antioxidants, anti-aging agents, reinforcing agents other than carbon black, softeners other than paraffin-based processing oils, hygroscopic agents, organic peroxides, crosslinking aids, fillers, processing aids, activators, and other formulating agents, as well as other resins, may be appropriately formulated as in the first state. [Formulation] In the copolymer composition of this state sample, the preferred formulation amount of the hydrogen-containing silicon compound (Y) relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. Furthermore, in the copolymer composition of this state sample, the preferred formulation amount of the platinum-based catalyst relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. In the copolymer composition of this sample, the amount of carbon black relative to 100 parts by mass of copolymer (S) is preferably 0.1 to 200 parts by mass, more preferably 20 to 200 parts by mass, and even more preferably 30 to 150 parts by mass. When the amount of carbon black is above the lower limit, its mechanical strength is superior. When the amount of carbon black is below the upper limit, its processability is superior. In the copolymer composition of this sample, the amount of paraffinic processing oil blended relative to 100 parts by mass of copolymer (S) is preferably 0.1 to 200 parts by mass, more preferably 10 to 100 parts by mass, and even more preferably 20 to 80 parts by mass. When the amount of paraffinic processing oil blended is above the lower limit, the processability is excellent. When the amount of paraffinic processing oil blended is below the upper limit, the mechanical strength is excellent. [Munich Viscosity] The Munich viscosity "ML(1+4)100°C" of the mixture obtained by removing the hydrogen-containing silicon compound (Y), catalyst, and reaction inhibitor from the copolymer composition of this state is 8~200. Here, M is Munich unit, L is rotor shape, (1+4) means 1 minute of preheating followed by 4 minutes of rotor rotation, and 100°C indicates the measurement temperature. A Munich viscometer SMV-202 (manufactured by Shimadzu Corporation) was used for measurement. The "ML(1+4)100°C" of the above-mentioned mixed composition is preferably 20~150, more preferably 40~100. A "ML(1+4)100°C" value above the lower limit indicates excellent processability. A "ML(1+4)100°C" value below the upper limit indicates excellent processability during extrusion, injection molding, and other molding processes. [Cross-linked molded body] The copolymer composition of this sample is pre-formed into the desired shape by various forming methods such as extrusion molding machine, burnishing roller, press, injection molding machine, transfer molding machine, etc., or at the same time as forming, the molded body is introduced into a vulcanizing tank for heating and cross-linking, thereby obtaining a cross-linked molded body formed by cross-linking the copolymer composition. As a heating method, any known method can be used without restriction. Preferably, a heating bath using hot air, a fluid bed of glass beads, UHF (ultra-short wave electromagnetic waves), steam, or LCM (thermal molten salt bath) is used, and heating is performed at a temperature of 150-200°C for 1-30 minutes. During molding and crosslinking, a mold may or may not be used. When a mold is not used, the copolymer composition is typically molded and crosslinked continuously. The cross-linked molded body obtained from the copolymer composition of this sample can be used for various applications. Specifically, it is suitable for use in weatherproof strips and other sponge materials. [Effects and Effects] The copolymer composition of this sample exhibits superior formability, including extrusion molding, compression molding, injection molding, and roll forming. Furthermore, the cross-linked molding system obtained by cross-linking this copolymer composition demonstrates superior low-temperature properties (softness and rubber elasticity at low temperatures), mechanical properties, and heat resistance. The reasons for this are not yet fully understood, but it is believed to be due to high cross-linking density and uniform cross-linking structure. <Fourth State Sample> The copolymer composition of the fourth state sample of the present invention comprises: a copolymer (S1) of the preferred state sample represented as copolymer (S) in the first state sample, and a copolymer with a limiting viscosity [η] of 0.5 dL / g or more and less than 2.0 dL / g; a hydrogen-containing silicone compound (Y); a platinum catalyst; and a paraffin-based processing oil. Furthermore, the Munich viscosity "ML(1+4)100°C" obtained according to the method described in JIS K 6300-1:2013 is 0.1 to 8. Furthermore, the crosslinked molded body of the fourth state sample of the present invention is characterized in that it is obtained by crosslinking the copolymer composition of the fourth state sample. [Copolymer (S)] The copolymer (S) of this state sample is copolymer (S1) and its limiting viscosity [η] is within a specific range. That is, it has the constituent units derived from ethylene (A), α-olefins (B) with 3 to 20 carbon atoms, and non-conjugated polyenes (C) as described in the first state sample, and in addition to the above requirements (i) and (ii), it also satisfies the above requirements (iii) to (v), and its limiting viscosity [η] is 0.5 dL / g or more and less than 2.0 dL / g. Since the limiting viscosity [η] of the copolymer (S) is 0.5 dL / g or more but less than 2.0 dL / g, the Munich viscosity "ML(1+4)100℃" obtained by the method described in JIS K 6300-1:2013 for the copolymer composition can be easily adjusted to the range of 0.1 to 8. The limiting viscosity [η] of the copolymer (S) in this state is preferably 0.6 to 1.5 dL / g, and more preferably 0.7 to 1.3 dL / g. Except that the copolymer (S) in this sample is copolymer (S1) and has a specified limiting viscosity range, it is otherwise identical to the copolymer (S) in the first sample, including the preferred sample. The copolymer composition of this sample may also contain two or more copolymers (S1) with limiting viscosity [η] within the above-mentioned range. [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) in the copolymer composition of this sample is the same as that in the first sample. That is, the hydrogen-containing silicon compound (Y) in this sample has the same structural features as described in the first sample. The preferred state of the hydrogen-containing silicon compound (Y) in this sample is the same as that in the first sample. The copolymer composition of this sample may also contain two or more hydrogen-containing silicon compounds (Y). [Platinum-based catalyst] The platinum-based catalyst used for hydrosilicone crosslinking in this sample is the same as the platinum-based catalyst used for hydrosilicone crosslinking in the first sample, and also the same as in the preferred sample. The copolymer composition of this sample may also contain two or more platinum-based catalysts. [Softener] The copolymer composition of this sample contains paraffinic processing oil as a softener. The copolymer composition of this sample preferably contains 5% or more by mass of paraffinic processing oil, more preferably 10% or more by mass, and most preferably contains only paraffinic processing oil, relative to the total softener contained. Examples of softeners other than paraffin-based processing oils include petroleum-based softeners such as processing oils, lubricating oils, paraffin oils, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar-based softeners such as coal tar; fatty oil-based softeners such as castor oil, linseed oil, rapeseed oil, soybean oil, and coconut oil; waxes such as beeswax and palm wax; naphthenic acids, pine oil, rosin, or their derivatives; synthetic polymers such as terpene resins, petroleum resins, and lavender resins; ester-based softeners such as dioctyl phthalate and dioctyl adipate; and others such as microcrystalline waxes, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon-based synthetic lubricating oils, tall oils, and substitute rubbers (oil-based rubbers). [Formulating agents, etc.] Reaction inhibitors, antioxidants, anti-aging agents, reinforcing agents, softeners other than paraffin-based processing oils, hygroscopic agents, organic peroxides, crosslinking aids, fillers, processing aids, activators, and other formulating agents, as well as other resins, may be appropriately formulated as in the first state. [Formulation] In the copolymer composition of this state sample, the preferred formulation amount of the hydrogen-containing silicon compound (Y) relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. Furthermore, in the copolymer composition of this state sample, the preferred formulation amount of the platinum-based catalyst relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. In the copolymer composition of this sample, the amount of carbon black is 30 to 100 parts by mass relative to 100 parts by mass of copolymer (S), more preferably 30 to 90 parts by mass, and even more preferably 30 to 80 parts by mass. If the amount of carbon black is within the above range, the balance between processability and mechanical strength is excellent. In the copolymer composition of this sample, the amount of paraffinic processing oil blended relative to 100 parts by mass of copolymer (S) is 10 to 100 parts by mass, more preferably 20 to 90 parts by mass, and even more preferably 30 to 80 parts by mass. When the amount of paraffinic processing oil blended is above the lower limit, the processability is excellent. When the amount of paraffinic processing oil blended is below the upper limit, the mechanical strength is excellent. [Munich Viscosity] The Munich viscosity of the copolymer composition of this sample, "ML(1+4)100℃", is 0.1~8. M represents Munich units, L represents the rotor shape, (1+4) means 1 minute of preheating followed by 4 minutes of rotor rotation, and 100℃ represents the measurement temperature. The measurement was performed using a Munich viscometer SMV-202 (manufactured by Shimadzu Corporation). If "ML(1+4)100℃" falls within the above range, the sample can be easily shaped by hand, similar to clay modeling. [Cross-linked molded body] The copolymer composition of this sample is prepared into the required shape by various forming methods such as extrusion molding machine, burnishing roller, press, injection molding machine, transfer molding machine, etc., or at the same time as forming, the molded body is introduced into a vulcanizing tank for heating and cross-linking, thereby obtaining a cross-linked molded body formed by cross-linking the copolymer composition. As a heating method, any known method can be used without limitation, but a heating bath using hot air, a fluid bed of glass beads, UHF (ultra-short wave electromagnetic waves), steam, or LCM (thermal molten salt bath) is preferred, with heating at 150-200°C for 1-30 minutes. During molding and crosslinking, molds may or may not be used. When molds are not used, the copolymer composition is typically molded and crosslinked continuously. The cross-linked molded articles obtained from the copolymer composition of this sample can be used for a variety of applications. Specifically, they are suitable for use in golf club grips, cane grips, toothbrush grips, cutlery (spoon, fork, chopsticks) grips, broom grips, teacup grips, etc. [Effects] According to the copolymer composition of this sample, the cross-linked molded body obtained by cross-linking this copolymer composition has a smaller compressive stress. Furthermore, when this copolymer composition is cross-linked, it achieves a hardness similar to clay processing, allowing for hand-forming. The reason for the smaller compressive stress has not yet been clarified, but it is believed to be due to the high cross-linking density and uniform cross-linking structure. <Fifth State Sample> The copolymer composition of the fifth state sample of the present invention comprises: a copolymer (S1) of the preferred state sample represented as copolymer (S) in the first state sample, and a copolymer with a limiting viscosity [η] of 0.5 dL / g or more and less than 2.0 dL / g; a hydrogen-containing silicon-based compound (Y); a platinum-based catalyst; carbon black; and a paraffin-based processing oil. Furthermore, the Brinell rotational viscosity at 25°C obtained according to the method described in JIS K 7117:1999 is 6000 Pa‧s or less. Furthermore, the crosslinked molded body of the fifth state sample of the present invention is characterized in that it is obtained by crosslinking the copolymer composition of the fifth state sample. [Copolymer (S)] The copolymer (S) of this state sample is copolymer (S1) and its limiting viscosity [η] is within a specific range. That is, it has the constituent units derived from ethylene (A), α-olefins (B) with 3 to 20 carbon atoms, and non-conjugated polyenes (C) as described in the first state sample, and in addition to the above requirements (i) and (ii), it also satisfies the above requirements (iii) to (v), and its limiting viscosity [η] is 0.5 dL / g or more and less than 2.0 dL / g. With the limiting viscosity [η] of the copolymer (S) being 0.5 dL / g or more but less than 2.0 dL / g, the Brinell rotational viscosity at 25°C obtained by the method described in JIS K 7117:1999 can be easily adjusted to below 6000 Pa‧s. The limiting viscosity [η] of the copolymer (S) in this state is preferably 0.6~1.5 dL / g, more preferably 0.7~1.3 dL / g. Except that the copolymer (S) in this sample is copolymer (S1) and has a specified limiting viscosity range, it is otherwise identical to the copolymer (S) in the first sample, including the preferred sample. The copolymer composition of this sample may also contain two or more copolymers (S1) with limiting viscosity [η] within the above-mentioned range. [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) in the copolymer composition of this sample is the same as that in the first sample. That is, the hydrogen-containing silicon compound (Y) in this sample has the same structural features as described in the first sample. The preferred state of the hydrogen-containing silicon compound (Y) in this sample is the same as that in the first sample. The copolymer composition of this sample may also contain two or more hydrogen-containing silicon compounds (Y). [Platinum-based catalyst] The platinum-based catalyst used for hydrosilicone crosslinking in this sample is the same as the platinum-based catalyst used for hydrosilicone crosslinking in the first sample, and also the same as in the preferred sample. The copolymer composition of this sample may also contain two or more platinum-based catalysts. [Reinforcing Agent] The copolymer composition of this sample contains carbon black as a reinforcing agent. The copolymer composition of this sample preferably contains 5% by mass or more, more preferably 10% by mass or more of carbon black relative to the total reinforcing agent, and most preferably contains only carbon black. The carbon black can also be surface-treated using a silane coupling agent. [Softener] The copolymer composition of this sample contains paraffinic processing oil as a softener. The copolymer composition of this sample preferably contains 5% or more by mass of paraffinic processing oil, more preferably 10% or more by mass, and most preferably contains only paraffinic processing oil, relative to the total softener contained. Examples of softeners other than paraffin-based processing oils include petroleum-based softeners such as processing oils, lubricating oils, paraffin oils, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar-based softeners such as coal tar; fatty oil-based softeners such as castor oil, linseed oil, rapeseed oil, soybean oil, and coconut oil; waxes such as beeswax and palm wax; naphthenic acids, pine oil, rosin, or their derivatives; synthetic polymers such as terpene resins, petroleum resins, and lavender resins; ester-based softeners such as dioctyl phthalate and dioctyl adipate; and others such as microcrystalline waxes, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon-based synthetic lubricating oils, tall oils, and substitute rubbers (oil-based rubbers). [Formulating agents, etc.] Reaction inhibitors, antioxidants, anti-aging agents, reinforcing agents other than carbon black, softeners other than paraffin-based processing oils, hygroscopic agents, organic peroxides, crosslinking aids, fillers, processing aids, activators, and other formulating agents, as well as other resins, may be appropriately formulated as in the first state. [Formulation] In the copolymer composition of this state sample, the preferred formulation amount of the hydrogen-containing silicon compound (Y) relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. Furthermore, in the copolymer composition of this state sample, the preferred formulation amount of the platinum-based catalyst relative to 100 parts by mass of the copolymer (S) is the same as that of the first state sample. In the copolymer composition of this sample, the amount of carbon black is preferably 0.1 to 200 parts by mass, more preferably 5 to 200 parts by mass, and even more preferably 10 to 180 parts by mass, relative to 100 parts by mass of copolymer (S). By adjusting the amount of carbon black within the above range, a superior balance between fluidity, mechanical strength, and compressive stress is achieved. In the copolymer composition of this sample, the amount of paraffinic processing oil blended relative to 100 parts by mass of copolymer (S) is 100-400 parts by mass, more preferably 200-365 parts by mass, and even more preferably 245-325 parts by mass. If the amount of paraffinic processing oil blended is within the above range, the balance between fluidity, mechanical strength, and compressive permanent strain is superior. [Brookfield rotational viscosity] The Brookfield rotational viscosity (Type B viscosity) of the copolymer composition of this sample at 25°C, determined according to the method described in JIS K 7117:1999, is 6000 Pa·s or less. A Brookfield rotational viscosity of 50–5800 Pa·s is preferred, and more preferably 50–5600 Pa·s. If the Brookfield rotational viscosity is within the above range, the flowability is excellent. The determination was performed using a Brookfield rotational viscometer, Model DV-II (manufactured by Brookfield Engineering Laboratories, Inc.). [Cross-linked molded body] The copolymer composition of this sample can be pre-formed into the desired shape by various forming methods such as extrusion molding machine, burnishing roller, press, injection molding machine, transfer molding machine, etc., or the molded body can be introduced into a vulcanizing tank for heating and cross-linking at the same time as forming, thereby obtaining a cross-linked molded body formed by cross-linking the copolymer composition. As a heating method, any known method can be used without restriction. Preferably, a heating bath using hot air, a fluid bed of glass beads, UHF (ultra-short wave electromagnetic waves), steam, or LCM (thermal molten salt bath) is used, and heating is performed at a temperature of 150-200°C for 1-30 minutes. During molding and crosslinking, a mold may or may not be used. When a mold is not used, the copolymer composition is typically molded and crosslinked continuously. The cross-linked molded articles obtained from the copolymer composition of this sample can be used for a variety of applications. Specifically, they are suitable for use in sealing materials, rubber coatings, etc. [Effects] Based on the copolymer composition of this sample, the cross-linked molded body obtained by cross-linking this copolymer composition exhibits superior rubber properties. The reason for this has not yet been clarified, but it is believed to be due to the uniform cross-linking structure. <Sixth State Sample> The copolymer composition of the sixth state sample of the present invention comprises: a copolymer belonging to copolymer (S1) of the preferred state sample represented as copolymer (S) in the first state sample; a hydrogen-containing silicon-based compound (Y); a platinum group catalyst; a reaction inhibitor; and an organic peroxide. Furthermore, "parts by mass" in this specification and claims refers to parts by mass converted from solids excluding solvent. Also, the numerical range indicated by "~" refers to the numerical range with the values ​​before and after "~" as the lower and upper limits. [Copolymer (S)] The copolymer (S) of this state has: constituent units derived from ethylene (A); constituent units derived from α-olefins (B) having 3 to 20 carbon atoms; and constituent units derived from non-conjugated polyenes (C). The total mass percentage concentration of the constituent units derived from ethylene (A), α-olefins (B) having 3 to 20 carbon atoms, and non-conjugated polyenes (C) relative to the total constituent units constituting the copolymer (S) is preferably 80% by mass or more, more preferably 90% by mass or more, even more preferably 92% by mass or more, and particularly preferably 100% by mass. Examples of α-olefins (B) with 3 to 20 carbon atoms (hereinafter sometimes simply referred to as "α-olefins (B)") include propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, and 1-eicosene. Among these, α-olefins with 3 to 8 carbon atoms, such as propylene, 1-butene, 1-hexene, and 1-octene, are preferred, with propylene being particularly preferred. These α-olefins are relatively inexpensive to produce, and the resulting copolymers (S) exhibit superior mechanical properties, thus yielding rubber-elastic molded bodies, making them superior. One or more of these α-olefins can be used. The nonconjugated polyene (C) molecules contain at least two nonconjugated polyenes selected from at least one of the following formulas (I) and (II). [Chemistry 9] Examples of non-conjugated polyenes (C) include 5-vinyl-2-norphene (VNB), norphene, 1,4-hexadiene, and dicyclopentadiene. Among these, non-conjugated polyenes (C) preferably contain VNB due to their high availability, good hydrosilicone crosslinking, and ease of improving the heat resistance of the polymer composition. A single non-conjugated polyene (C) or two or more can be used. The copolymer (S) in this state sample may further contain constituent units (CX) derived from non-conjugated polyenes (CX) whose molecules contain only one partial structure selected from the group consisting of the above general formulas (I) and (II). This is within the scope of not impairing the effect of this state sample. Examples of such non-conjugated polyenes (CX) include 5-ethylidene-2-norphene (ENB), 5-methylene-2-norphene, 5-(2-propenyl)-2-norphene, 5-(3-butenyl)-2-norphene, 5-(1-methyl-2-propenyl)-2-norphene, 5-(4-pentenyl)-2-norphene, 5-(1-methyl-3-butenyl)-2-norphene, 5-(5-hexenyl)-2-norphene, 5-(1-methyl-4-pentenyl)-2-norphene, 5-(2,3-dimethyl-3-butenyl)-2-norphene, and 5-(2-ethylidene-2-norphene). Examples of norepinephrine include 5-(6-heptenyl)-2-northene, 5-(3-methyl-5-hexenyl)-2-northene, 5-(3,4-dimethyl-4-pentenyl)-2-northene, 5-(3-ethyl-4-pentenyl)-2-northene, 5-(7-octenyl)-2-northene, 5-(2-methyl-6-heptenyl)-2-northene, 5-(1,2-dimethyl-5-hexenyl)-2-northene, 5-(5-ethyl-5-hexenyl)-2-northene, and 5-(1,2,3-trimethyl-4-pentyl)-2-northene. Among these, ENB is preferred due to its high ease of acquisition, ease of controlling the crosslinking rate during hydrogen-silicone crosslinking, and ease of obtaining good mechanical properties. One or more non-conjugated polyenes (CX) may be used. When the copolymer (S) of this state contains constituent units derived from non-conjugated polyenes (CX), the mass percentage concentration relative to the total constituent units constituting the copolymer (S) is preferably 0-20% by mass, more preferably 0-10% by mass, and even more preferably 0.01-8% by mass. The copolymer (S) of this state sample satisfies the following requirements (i) to (v): (i) The mole ratio [A] of the constituent units derived from ethylene (A) to the mole ratio [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms [A] / [B] satisfies 40 / 60 to 99.9 / 0.1. (ii) The mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the copolymer (S) is 0.07 to 10% by mass. (iii) The result obtained according to the following formula (1) is (n) C (n) is 4.5 or higher and 40 or lower. C = (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). (iv) Complex viscosity η at a frequency ω = 0.1 rad / s obtained by linear viscoelasticity determination (190 °C) using a rheometer. ✽ (ω=0.1) (Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the aforementioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the aforementioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S)) satisfy the following equation (2). P / ([η]) 2.9 )≦(C) of mass percentage concentration × 6 ‧‧‧Equation (2) (v) Number of long chain branches per 1000 carbon atoms obtained using 3D-GPC (LCB) 1000CThe natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3). 1000C ≦1-0.07×Ln(Mw) ‧‧‧Formula (3). In the copolymer (S) of the specific sample, the ratio of the mole number [A] of the constituent units derived from ethylene (A) to the mole number [B] of the constituent units derived from α-olefin (B) satisfies 40 / 60 to 99.9 / 0.1. The ratio of [A] / [B] is preferably 50 / 50~90 / 10, more preferably 55 / 45~85 / 15, and even more preferably 55 / 45~78 / 22. By satisfying requirement (i) with copolymer (S), the molded body obtained by hydrogen-silicone crosslinking of copolymer (S) exhibits superior rubber elasticity, mechanical strength, and flexibility, and is therefore preferred. Furthermore, the ratio [A] / [B] of the mole number [A] of the constituent units derived from ethylene (A) to the mole number [B] of the constituent units derived from α-olefin (B) in copolymer (S) can be determined by... 13 Obtained by C-NMR. Requirement (ii) is that in the specific copolymer (S), the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the copolymer (S) is 0.07 to 10% by mass. The mass percentage concentration of constituent units derived from non-conjugated polyenes (C) is preferably 0.1 to 8.0% by mass, more preferably 0.5 to 5.0% by mass. The copolymer (S) is preferred because, by satisfying requirement (ii), the cross-linked molded body obtained from the copolymer composition of this state sample has sufficient hardness and superior mechanical properties. Furthermore, when the copolymer (S) is cross-linked with hydrosilicone, a faster cross-linking rate is observed, allowing for efficient fabrication of the cross-linked molded body, which is also preferred. Moreover, the mass percentage concentration of the constituent units derived from non-conjugated polyenes (C) in the copolymer (S) can be determined by... 13 Obtained by C-NMR. The mass percentage concentration of the constituent units derived from the non-conjugated polyene (C) is preferably related to the weight average molecular weight (Mw) of the copolymer (S) satisfying the following equation (4): 6 - 0.45 × Ln(Mw) ≦ (C) mass percentage concentration ‧‧‧ Equation (4). Requirement (iii) is specifically obtained according to the following formula (1) (n C The range is 4.5 or higher and 40 or lower. (n) C= (Mw) × {(C) mass percentage concentration / 100} / (C) molecular weight ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight-average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). Furthermore, (Mw) is the weight-average molecular weight of polystyrene determined using gel permeation chromatography (GPC). (n C The preferred value is 4.5 or higher and 40 or lower, and the even better value is 4.5 or higher and 35 or lower. The result obtained from equation (1) above is (n) C ), which is the weight average molecular weight (Mw) of the copolymer (S) and the number of constituent units derived from non-conjugated polyenes (C) per unit. Through (n C When the crosslinking value is above the lower limit, a sufficient crosslinking rate can be easily obtained when performing hydrogen-silicone crosslinking. Furthermore, when it is below the upper limit, over-crosslinking is less likely to occur, and the resulting crosslinked molded body exhibits superior mechanical properties. When condition (iii) is met, the copolymer (S) has a low content of long-chain branches and a fast crosslinking rate of hydroxyl crosslinking, resulting in a superior balance of mechanical and physical properties in the crosslinked molded body. It is also less prone to post-crosslinking and exhibits particularly superior heat aging resistance, making it a better choice. When the copolymer (S) contains constituent units (CX), the following equation (1') yields (n) C+cx The preferred value is 4.5 or higher and 40 or lower; even better is 4.5 or higher and 35 or lower. (n) C+cx = (Mw) × [{(C) mass percentage concentration / 100} / (C) molecular weight + {(CX) mass percentage concentration / 100} / (CX) molecular weight] ‧‧‧(1') The result (n) obtained from the above formula (1') C+cx ), is the sum of the number of constituent units derived from non-conjugated polyenes (C) and the number of constituent units derived from non-conjugated polyenes (CX) per unit of the weight average molecular weight (Mw) of the copolymer (S). Requirement (iv) is the complex viscosity η of a specific copolymer (S) obtained by linear viscoelasticity measurement (190°C) using a rheometer at a frequency of ω = 0.1 rad / s. ✽ (ω=0.1)(Pa‧sec) and complex viscosity η at frequency ω=100rad / s ✽ (ω=100) (Pa‧sec) ratio P(η) ✽ (ω=0.1) / η ✽ (ω=100) The limiting viscosity [η] and the mass percentage concentration of the constituent units derived from the aforementioned non-conjugated polyene (C) (the content of the constituent units derived from the aforementioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the copolymer (S): mass%) satisfy the following equation (2). P / ([η]) 2.9 )≦(C) of mass percentage concentration × 6 ‧‧‧Equation (2) The rheometer was used with the Ares (Rheometric Scientific) viscoelastic measuring apparatus, and the measurements were performed at 190°C, with a strain of 1.0% and varying frequency. The limiting viscosity [η] refers to the value measured in decahydronaphthalene at 135°C. The preferred polymer (S) satisfies the following equation (2'). P / ([η]) 2.9 )≦(C) mass percentage concentration × 5.7 ‧‧‧Equation (2') ratio P(η ✽ (ω=0.1) / η ✽ (ω=100) The ) represents the frequency dependence of viscosity, and P / ([η] on the left side of equations (2) and (2') 2.9 Although affected by factors such as short chain branching or molecular weight, it tends to show higher values ​​when there are more long chain branches. Generally speaking, in ethylene-α-olefin-nonconjugated polyene copolymers, the more constituent units derived from nonconjugated polyenes there are, the more long-chain branches there tend to be. However, the copolymer (S) of the present invention has fewer long-chain branches than conventional ethylene-α-olefin-nonconjugated polyene copolymers, and therefore can satisfy the above formula (2). Requirement (v) refers to the number of long-chain branches (LCB) per 1000 carbon atoms in a specific copolymer (S) obtained using 3D-GPC. 1000CThe natural logarithm of the weight-average molecular weight (Mw) [Ln(Mw)] satisfies the following equation (3). 1000C ≦1-0.07×Ln(Mw) ‧‧‧Formula (3). Equation (3) above defines the upper limit of the long-chain branch content per unit carbon number in a specific copolymer (S). That is, requirement (v) indicates that the proportion of long-chain branches in copolymer (S) is relatively low. By satisfying requirement (v), copolymer (S) exhibits superior hardening characteristics during hydrogen-silicone crosslinking. Furthermore, the resulting crosslinking molding system exhibits superior heat aging resistance. Copolymer (S) preferably satisfies the following equation (3'). LCB 1000C ≦1-0.071×Ln(Mw)...Equation (3') In equation (3) and equation (3'), Mw and (LCB) 1000C The values ​​were obtained using 3D-GPC via structural analysis. Specifically, the absolute molecular weight distribution was determined using a PL-GPC220 3D-high temperature GPC apparatus (manufactured by Polymer Laboratories), and the limiting viscosity was determined using a viscometer. The main measurement conditions are as follows. Detectors: Differential refractometer / GPC device with built-in 2-angle light scattering photometer PD2040 (manufactured by Precison Detectors); Bridge viscometer PL-BV400 (manufactured by Polymer Laboratories) Column: TSKgel GMH HR -H(S)HT×2 sticks + TSKgel GMH HR -M(S) × 1 piece (each piece has an inner diameter of 7.8 mm and a length of 300 mm) Temperature: 140℃ Mobile phase: 1,2,4-trichlorobenzene (containing 0.025% BHT) Injection volume: 0.5 mL Sample concentration: Ca 1.5 mg / mL Sample filtration: Filtered through a sintered filter with a pore size of 1.0 μm The dn / dc value necessary to determine the absolute molecular weight is determined based on the dn / dc value of 0.053 for standard polystyrene (molecular weight 190,000) and the response intensity of the differential refractometer per unit injection mass, depending on the individual sample. The long-chain branching parameter g'i of each eluent component is calculated by formula (v-1) based on the relationship between the limiting viscosity obtained by the viscometer and the absolute molecular weight obtained by the light scattering spectrophotometer. [Number 4] [η]i,br): The measured limiting viscosity of the i-th slice component. [η]i,lin): The limiting viscosity assuming the i-th slice component does not have long-chain branching structure and only shows short-chain branching structure. Here, [η]=KM is applied. v The relationship is v=0.725. Furthermore, g' is calculated from the average values ​​of (v-2), (v-3), and (v-4). Also, the trendline, assuming only short-chain branches, is determined individually for each sample. [Number 5] C i Concentration M of each extracted component i Absolute molecular weight of each extracted component Further calculations using g'w yielded the number of branch points per molecule (BrNo) and the number of branches per 1000 carbon atoms in the long chain (LCB). 1000C The degree of branching per unit molecular weight, λ. BrNo is calculated using the Zimm-Stockmayer formula (v-5), and LCB... 1000C The λ series is calculated using equations (v-6) and (v-7). g is the long-chain branching parameter obtained from the radius of inertia Rg, and the following simple correlation is applied between it and g' obtained from the limiting viscosity. ε in the equation is proposed in various values ​​depending on the molecular morphology, and the calculation is performed under the assumption that ε=1 (i.e., g'=g). [Number 6] λ=BrNo / M…(V-6) LCB 1000C =λ×14000…(V-7) In formula (V-7), 14000 represents the methylene group (CH4). 2 (Unit: 1000 parts) Molecular weight. The limiting viscosity [η] of the copolymer (S) is preferably 0.1~5 dL / g, more preferably 0.5~5.0 dL / g, and even more preferably 0.5~4.0 dL / g. The weight average molecular weight (Mw) of the copolymer (S) is preferably 10,000~600,000, more preferably 30,000~500,000, and even more preferably 50,000~400,000. The copolymer (S) of this state preferably satisfies the requirement (vi) shown in equation (5). (vi)Log{η ✽ (ω=0.01)} / Log{η ✽ (ω=10)}≦0.0753×{Appearance iodine value derived from non-conjugate multi-element (C)}+1.42‧‧‧Equation (5) In equation (5), η ✽ (ω=0.01) The complex viscosity η is obtained by linear viscoelastic measurement (190℃) using a rheometer at a frequency of ω = 0.01 rad / s. ✽ (Pa‧sec). Also, η ✽ (ω=10) The complex viscosity η is obtained by linear viscoelastic measurement (190℃) using a rheometer at a frequency of ω=10rad / s. ✽ (Pa‧sec). Here, η ✽ (ω=0.01) and η ✽ (ω=10) The complex viscosity η in component (iv) ✽ (ω=0.1) and complex viscosity η ✽ (ω=100) Except for the frequency, all other parameters are obtained in the same way. In equation (5), the apparent iodine value derived from the non-conjugated multiplicative element (C) is obtained by the following formula: Apparent iodine value derived from the non-conjugated multiplicative element (C) = weight fraction of (C) × 253.81 / molecular weight of (C) In equation (5) above, the left side represents the shear rate dependence of the long-chain branching index, and the right side represents the content index of non-conjugated components (C) that were not consumed as long-chain branches during polymerization. When condition (vi) is met, the degree of long-chain branching is not too high, which is better. When condition (vi) is not met, it means that a larger proportion of the non-conjugated components (C) in the copolymerized product is consumed to form long-chain branches. The copolymer composition of this sample may also contain two or more copolymers (S). For example, two or more of the above copolymers (S) with different molar ratios of (A) ethylene / α-olefins with 3 to 20 carbon atoms, (B) iodine, or (C) limiting viscosity [η] may be mixed together for use. In particular, a mixture of (C) low limiting viscosity component and high limiting viscosity component may be used. In this sample, the method for manufacturing the copolymer (S) is not particularly limited, but it is preferably obtained by copolymerizing the monomers in the presence of a ferrocene compound, and more preferably by copolymerizing the monomers in the presence of a catalyst system containing a ferrocene compound. Specifically, for example, it can be manufactured by the method described in International Patent Publication No. 2015 / 122495. [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) of the present invention is an organo-based hydrogen polysiloxane having at least one silicon atom bonded to an aryl group and at least two silicon atoms bonded to hydrogen atoms within the molecule, as shown in formula (a). The copolymer composition of this state may also contain two or more hydrogen-containing silicon compounds (Y). [Chemistry 10] In equation (a), n and p are 0 or positive numbers, m is a number in the range of 1 to 20, and the sum of n, m, and p is 5 to 50. 1 and R 2 Each is an independent monovalent alkyl group, and they can be the same or different. R a R is an aryl alkyl group, and R is selected from R 1 R 2 , hydrogen atom and R a The basis. Where n=1, at least one of R is a hydrogen atom, and n=0, both R are hydrogen atoms. This type of hydrogen-containing silicone compound (Y) is a silicone with a low degree of polymerization and an organic-based hydrogen polysiloxane having a straight-chain structure with at least one silicon atom bonded to an aralkyl group and at least two silicon atoms bonded to hydrogen atoms within the molecule. By selectively combining hydrogen-containing silicon-based compounds (Y) with copolymers (S), molded articles with particularly superior physical properties such as char resistance, formability, elongation at break, and compression molding strain can be obtained, which can especially improve the applicability to materials such as weatherproof strips and sponge materials. In formula (a), m is the number of diorganosiloxy units with alkyl groups bonded by silicon atoms, which is in the range of 1 to 20, or in the range of 2 to 10, and preferably in the range of 3 to 6. In formula (a), n is the number of organic hydroxyl groups with side chains bonded to hydrogen atoms, which can be 0 or 1. When n=1, at least one of R is a hydrogen atom. When n=0, both R are hydrogen atoms, resulting in a structure with at least two silicon atoms bonded to hydrogen atoms in the molecule. Furthermore, even if n is a number other than 0 or 1, it is acceptable if one or both of the R atoms at the two ends of the molecular chain are silicon atoms bonded to hydrogen atoms. Moreover, n is preferably a number other than 0 or 1, and more preferably a number n ≥ m. More specifically, n can be a number in the range of 3 to 10, and particularly preferably a number in the range of 3 to 9. In formula (a), p is the number of two organosiloxane units that do not contain aralkyl or silicon atoms bonded to hydrogen atoms. It can be 0, and can be a range of values ​​where the total degree of polymerization of the two organosiloxane units, expressed as the sum of n, m, and p (described later), is subtracted from the values ​​of n and m. For example, p can be a value in the range of 0 to 12, a number in the range of 0 to 10, a number in the range of 0 to 5, and preferably 0 to 2. The hydrogen-containing silicone compound (Y) can be a siloxane with a low degree of polymerization. The sum of the values ​​of n, m, and p mentioned above is 5 to 50, preferably 5 to 20, and can also be 5 to 15. In the hydrogen-containing silicone compound (Y) belonging to the crosslinking agent of the present invention, it is particularly preferred that m is in the range of 3 to 6, n is in the range of 3 to 9, and p is in the range of 0 to 2. In equation (a), R is selected from R 1 R 2 , hydrogen atom and R a Either of the bases. Where n=0 or 1, one or both of R are hydrogen atoms. R in the formula... 1 R 2 It is a monovalent alkyl group, which can be the same or different, and some of the carbon atoms are bonded to hydrogen atoms, which can also be replaced by halogen atoms. This type of alkyl group can be an alkyl group with 1 to 20 carbon atoms, and industrially it can be a methyl group. In equation (a), R a It is an aralkyl group, which may be an aralkyl group with 7 to 20 carbon atoms, and more preferably an aralkyl group with 7 to 15 carbon atoms. Examples of such aralkyl groups include benzyl, phenethyl, phenylpropyl, phenylbutyl, etc., and it is particularly preferred that the alkyl structure between the aryl group such as phenyl and the silicon atom contains at least one -CH(CH) group. 3) - The branch unit shown. In this invention, the preferred system R a For -CH 2-CH(CH 3)-C 6H Aryl groups as shown in Figure 5. The aralkyl group is a characteristic functional group that endows the hydrogen-containing silicon compound (Y) with the effectiveness of crosslinking agent. In particular, since the aralkyl group and silicon atom are bonded to hydrogen atoms in this component within the above range, the physical properties of the resulting molded article are significantly improved. In the copolymer composition of this sample, the amount of hydrogen-containing silicon compound (Y) relative to 100 parts by mass of copolymer (S) is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 10 parts by mass, and even more preferably 0.1 to 8 parts by mass. [Platinum-based catalysts] Platinum-based catalysts for hydrosilicone crosslinking that are addition reaction catalysts that can promote the addition reaction (hydrosilicification reaction of olefins) between the alkenyl group of the copolymer (S) and the hydrosilicyl group of the hydrosilicone compound (Y) can be used without particular restrictions. Specifically, platinum-based catalysts are typically known materials used in addition-curing processes, such as the micro-powdered platinum catalyst described in U.S. Patent No. 2,970,150, the platinum chloride catalyst described in U.S. Patent No. 2,823,218, the platinum-hydrocarbon complexes described in U.S. Patent No. 3,159,601 and U.S. Patent No. 159,662, the platinum chloride-olefin complexes described in U.S. Patent No. 3,516,946, and the platinum-vinylsiloxane complexes described in U.S. Patent No. 3,775,452 and U.S. Patent No. 3,814,780. More specifically, examples include platinum monomers (platinum black), platinum chloride, platinum-olefin complexes, platinum-alcohol complexes, or platinum-based catalysts supported on alumina, silicon dioxide, or other carriers. The copolymer composition of this state may also contain two or more platinum-based catalysts. In the copolymer composition of this sample, the amount of platinum-based catalyst is preferably 0.001 to 1 part by mass, more preferably 0.005 to 1 part by mass, and even more preferably 0.005 to 0.8 parts by mass relative to 100 parts by mass of copolymer (S). [Organic Peroxide (Z)] Examples of organic peroxides (Z) include diisophenylpropyl peroxide (DCP), ditert-tert-butyl peroxide, 2,5-di(tert-butylperoxy)hexane, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyn-3, 1,3-bis(tert-butylperoxyisopropyl)benzene, 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, n-butyl-4,4-bis(tert-butylperoxy)valerate, benzylmethoxyperoxide, p-chlorobenzoylperoxide, 2,4-dichlorobenzoylperoxide, tert-butylperoxybenzoate, tert-butylperoxyisopropyl carbonate, diacetylated peroxide, lauryl peroxide, and tert-butylisophenylpropyl peroxide. The organic peroxide (Z) is preferably one that produces low molecular weight compounds as decomposition products during crosslinking, and whose vapor pressure is sufficiently high. Using this type of organic peroxide (Z) results in crosslinked molded articles that are less prone to residual odor. Furthermore, in this specification and claims, the amount of organic peroxide (Z) used is converted to a dosage of 100% by mass purity. Organic peroxides are typically sold at approximately 40% by mass purity for ease of handling. In the case of products with 40% by mass purity, the dosage of the organic peroxide is calculated by multiplying the mass of the product by 0.4. In the copolymer composition of this sample, the amount of organic peroxide (Z) relative to 100 parts by mass of copolymer (S) is 0.2 to 6 parts by mass, more preferably 0.2 to 4.8 parts by mass, and even more preferably 0.2 to 4 parts by mass. In the copolymer composition of this sample, the total amount of hydrogen-containing silicon compound (Y) and organic peroxide (Z) relative to 100 parts by mass of copolymer (S) is preferably 0.01 to 0.15 equivalents, more preferably 0.01 to 0.1 equivalents, and even more preferably 0.02 to 0.1 equivalents. In the copolymer composition of this sample, the equivalent ratio [Y / Z] of the amount of hydrogen-containing silicon compound (Y) to organic peroxide (Z) is preferably 23 / 77 to 99 / 1, and more preferably 47 / 53 to 99 / 1. [Reaction Inhibitor] The copolymer composition of this sample preferably contains a reaction inhibitor. The reaction inhibitor is a compound that inhibits the cross-linking reaction (hydrosilylation addition reaction of the alkene) between the alkenyl group of the copolymer (S) and the hydrosilyl group of the hydrosilyl compound (Y). The formulation of a reaction inhibitor is preferable in terms of stabilizing the processability of the composition during mixing and molding. Specific examples of reaction inhibitors include benzotriazole; acetylenols such as 1-hexyn-3-ol, 3-methyl-1-butyn-3-ol, 3,6-dimethyl-4-octylen-3,6-diol, 2,4,7,9-tetramethyl-5-decyn-4,7-diol, 1-ethynylcyclohexanol, and 3,5-dimethyl-1-hexyn-3-ol; acrylonitrile; and N,N-diallylacetylene. Acetamide compounds, including amines, N,N-diallylphenylamine, N,N,N',N'-tetraallyl-o-phthalic acid diacetamide, N,N,N',N'-tetraallyl-m-phthalic acid diacetamide, and N,N,N',N'-tetraallyl-p-phthalic acid diacetamide; and other acetamide compounds containing sulfur, phosphorus, nitrogen, amines, sulfur compounds, phosphorus compounds, tin, tin compounds, and tetramethyltetravinylcyclotetrasiloxanes. Among these compounds, 3,5-dimethyl-1-hexyn-3-ol is particularly preferred. The copolymer composition of this state may also contain two or more reaction inhibitors. In the copolymer composition of this sample, the amount of reaction inhibitor is preferably 0.001 to 5 parts by mass, more preferably 0.005 to 1 part by mass, and even more preferably 0.005 to 0.8 parts by mass, relative to 100 parts by mass of copolymer (S). [Antioxidants] The copolymer composition of this sample may also contain antioxidants. Hindered phenolic antioxidants are preferred. By including hindered phenolic antioxidants in the copolymer composition of this sample, a cross-linked molded body with higher water absorption and superior compression set can be obtained. The copolymer composition of this sample may also contain two or more antioxidants. Examples of hindered phenolic antioxidants include 2,4,6-tris(3',5'-ditert-butyl-4'-hydroxybenzyl)trimethylbenzene (manufactured by ADEKA, trade name: ADK STAB AO-330, melting point: 243~245℃), 1,3,5-tris(3,5-ditert-butyl-4-hydroxybenzyl)-1,3,5-tris(2,4,6(1H, 3H, 5H)-trione (manufactured by ADEKA, trade name: ADK STAB AO-20, melting point: 220~222℃), and 4,4'-butylenebis(6-tert-butyl-m-cresol) (manufactured by ADEKA, trade name: ADK STAB). AO-40 (melting point: 210~214℃), N,N'-bis{3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl}hydrazine (manufactured by BASF JAPAN, trade name: Irganox MD1024, melting point: 224~229℃), neopentyl tert-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (manufactured by BASF JAPAN, trade name: Irganox 1010, melting point: 110~130℃), dibutylhydroxytoluene, 2,5-di-tert-butylhydroquinone (manufactured by Ouchi Shinsei Chemical Co., Ltd., trade name: NOCRAC NS-7, melting point: above 200℃), etc. When the copolymer composition of this sample contains an antioxidant, the amount of antioxidant is preferably 0.001 to 10 parts by mass, more preferably 0.005 to 10 parts by mass, even more preferably 0.1 to 10 parts by mass, and particularly preferably 0.5 to 8 parts by mass, relative to 100 parts by mass of copolymer (S). [Anti-aging Agent] The copolymer composition of this sample may also contain an anti-aging agent. Commonly known anti-aging agents used in general rubber compositions can be used as anti-aging agents. Examples include sulfur-based, phenolic, and amine-based anti-aging agents. Anti-aging agents can be used alone, but it is preferable to use two or more in combination to maintain long-term heat aging resistance at high temperatures. When the copolymer composition of this sample contains a sulfur-based anti-aging agent, it is preferably used in the range of 0.2 to 10 parts by weight, more preferably 0.2 to 8 parts by weight, and most preferably 0.2 to 6 parts by weight relative to 100 parts by weight of copolymer (S). If the sulfur-based anti-aging agent is used within the above range, the effect of improving heat aging resistance is significant. When the copolymer composition of this sample contains a phenolic anti-aging agent, it is preferably used in the range of 0.2 to 5 parts by weight, more preferably 0.5 to 4 parts by weight, and most preferably 0.5 to 3 parts by weight relative to 100 parts by weight of copolymer (S). If the phenolic anti-aging agent is used within the above range, the effect of improving heat aging resistance is significant. When the copolymer composition of this sample contains an amine-based anti-aging agent, it is preferably used in the range of 0.05 to 5 parts by weight, more preferably 0.1 to 4 parts by weight, and most preferably 0.2 to 3 parts by weight relative to 100 parts by weight of copolymer (S). If the amine-based anti-aging agent is used within the above range, the effect of improving heat aging resistance is significant. [Reinforcing Agent] To improve properties such as tensile stress at break and elongation at break, the copolymer composition of this sample may also contain a reinforcing agent. The reinforcing agent is a known rubber reinforcing agent formulated into the rubber composition, specifically including, for example, carbon black, carbon black surface-treated with a silane coupling agent, silicon dioxide, calcium carbonate, activated calcium carbonate, micronized talc, and micronized silica. The copolymer composition of this sample may also contain two or more reinforcing agents. The preferred formulation contains carbon black. The presence of carbon black improves the processability of the copolymer composition and results in copolymer compositions with enhanced mechanical properties such as tensile strength, tear strength, and wear resistance. As carbon black, known materials such as Asahi #50HG, Asahi #55G, Asahi #60UG (all manufactured by Asahi Carbon), SEAST SVH, SEAST V, and SEAST G-SO (all manufactured by Tokai Carbon) can be used. These can be used alone or in combination. Additionally, carbon black that has undergone surface treatment with silane coupling agents can also be used. When the copolymer composition of this sample contains carbon black, it is preferably used in the range of 1 to 200 parts by mass, more preferably 5 to 150 parts by mass, and most preferably 10 to 100 parts by mass relative to 100 parts by mass of copolymer (S). If the amount of carbon black is within the above range, a copolymer composition with superior dynamic ratio (dynamic elastic modulus / static elastic modulus), processability, and mechanical properties can be obtained. [Softener] The copolymer composition of this sample may also contain a softener. The softener may be a known softener formulated in the rubber composition. Specifically, examples include petroleum-based softeners such as processing oils, lubricating oils, paraffin oils, liquid paraffin, petroleum asphalt, and petroleum jelly; coal tar-based softeners such as coal tar; fatty oil-based softeners such as castor oil, linseed oil, rapeseed oil, soybean oil, and coconut oil; waxes such as beeswax and palm wax; naphthenic acids, pine oil, rosin, or their derivatives; synthetic polymers such as terpene resins, petroleum resins, and lavender resins; ester-based softeners such as dioctyl phthalate and dioctyl adipate; and others such as microcrystalline waxes, liquid polybutadiene, modified liquid polybutadiene, hydrocarbon-based synthetic lubricating oils, tall oils, and substitute rubbers (oil-based rubbers). Among these, petroleum-based softeners are preferred, and paraffin-based processing oils are particularly preferred. The copolymer composition of this sample may also contain two or more softening agents. When the copolymer composition of this sample contains a plasticizer, it is preferably used in the range of 5 to 150 parts by weight, more preferably 10 to 150 parts by weight, and most preferably 10 to 120 parts by weight relative to 100 parts by weight of copolymer (S). If the amount of plasticizer is within the above range, a copolymer composition with superior properties such as low viscosity, processability, heat aging resistance, and mechanical properties can be obtained. [Desiccant] The copolymer composition of this sample may also contain a desiccant. Examples of desiccant include calcium oxide, silicone, sodium sulfate, molecular sieves, zeolite, and white carbon. Among these, calcium oxide is preferred. The amount of desiccant prepared relative to 100 parts by weight of the copolymer (S) is preferably 0.5 to 15 parts by weight, more preferably 1.0 to 12 parts by weight, and even more preferably 1.0 to 10 parts by weight. The copolymer composition of this sample may also contain two or more desiccants. [Crosslinking Aid] The copolymer composition of this sample may also contain a crosslinking aid. Specific examples of crosslinking aids include sulfur; quinone dioxime compounds such as p-quinone dioxime; methacrylate compounds such as polyethylene glycol dimethacrylate; allyl compounds such as diallyl phthalate and triallyl cyanurate; maleic diimide compounds; and divinylbenzene. This crosslinking aid is preferably used at an amount of 0.5 to 2 moles, more preferably about 1 mole, relative to 1 mole of the organic peroxide used. [Fillers] To reduce formulation costs, the copolymer composition of this sample may also contain fillers. Examples of fillers include talc and clay. One filler may be used alone, or two or more may be used. The filler is preferably used in the range of 1 to 500 parts by weight, more preferably 1 to 400 parts by weight, and even more preferably 1 to 300 parts by weight relative to 100 parts by weight of the copolymer (S). If the filler dosage is within the above range, the tensile strength, tear strength, and wear resistance of the resulting molded article can be improved. [Processing Aids] The copolymer composition of this sample may also contain processing aids. Processing aids can be widely used those commonly formulated into rubber as processing aids. Specifically, examples include ricinoleic acid, stearic acid, palmitic acid, lauric acid, barium stearate, zinc stearate, calcium stearate, zinc laurate, or esters. These processing aids may be a single type or two or more. The processing aid is appropriately formulated in an amount of 30 parts by weight or less, more preferably 25 parts by weight or less, and even more preferably 20 parts by weight or less, relative to 100 parts by weight of the copolymer (S). If the amount of processing aid is within the above range, the processability, such as mixing processability, extrusion processability, and injection molding processability, is superior. [Active Agent] The copolymer composition of this sample may also contain an active agent. Examples of active agents include glycols such as polyethylene glycol and diethylene glycol; amines such as di-n-butylamine and triethanolamine. These active agents may be a single type or two or more types. The active agent is preferably formulated in a range of 0.2 to 15 parts by weight, more preferably 0.3 to 10 parts by weight, and even more preferably 0.5 to 8 parts by weight relative to 100 parts by weight of the copolymer (S). [Blowing Agent] The copolymer composition of this sample may also contain a blowing agent. Examples of blowing agents include sodium bicarbonate-based blowing agents, ADCA (azodicarboxylic acid), DPT (N,N'-dinitrospentamethylenetetramine), and OBSH (4,4'-oxobis(benzenesulfonylhydrazine)). Among these, sodium bicarbonate-based blowing agents are preferred because they allow for lower specific gravity and higher crosslinking density in the foamed molded body. When the copolymer composition of this sample contains a foaming agent, the amount of foaming agent is preferably 0.001 to 10 parts by mass, more preferably 0.005 to 10 parts by mass, even more preferably 0.1 to 10 parts by mass, and particularly preferably 0.2 to 10 parts by mass, relative to 100 parts by mass of the copolymer (S). [Other formulations, etc.] In addition to the above-mentioned components, the copolymer composition of this sample may be appropriately formulated with well-known rubber formulations, such as metal salts of α,β-unsaturated organic acids, crosslinking accelerators, plasticizers, adhesive agents, etc., without compromising the purpose of this sample. [Other Resins] The copolymer composition of this sample may also contain resins or rubbers other than copolymer (S) to the extent that it does not impair the effect of this sample. The resins or rubbers other than copolymer (S) are preferably 50 parts by weight or less, more preferably 30 parts by weight or less, and even more preferably not blended relative to 100 parts by weight of copolymer (S). Examples of resins other than copolymers (S) include general-purpose resins such as polyethylene, polypropylene, and polystyrene. Examples of rubbers include polysiloxane rubber, ethylene-propylene random copolymer rubber (EPR), natural rubber, styrene-butadiene rubber, isoprene rubber, butadiene rubber, and chloroprene rubber. [Manufacturing of the Copolymer Composition] When the copolymer composition in this state is obtained, the same method as that used for commonly known rubber compositions can be employed. Specifically, as follows: Using a closed mixing machine such as a Banbury mixer, kneader, or intermixer, for example, the copolymer (S) and other components are mixed at a temperature of 80-170°C for 3-10 minutes. Then, the hydrogen-containing silicone compound (Y), platinum catalyst, reaction inhibitors as needed, reinforcing agents, softeners, and other formulation agents, or other rubbers or resins, are mixed using open rollers or a kneader at a roller temperature of 50-130°C for 5-30 minutes. The mixture is then pressed into sheets. This typically yields a copolymer composition in strip or sheet form. To obtain the copolymer composition of this state, it is preferable to first mix the copolymer (S), the hydrogen-containing silicon compound (Y), and other components as needed (first mixing), then add a platinum-based catalyst and reaction inhibitor for hydrogen-containing crosslinking, an organic peroxide, and other components as needed to the resulting mixture and mix again (second mixing). The organic peroxide may be added during either the first mixing or the second mixing. Specifically, the following method can be used: mixing the copolymer (S), the hydrogen-containing silicon compound (Y), and other components as needed at 80-170°C for 1-10 minutes, preferably at 110-170°C for 3-8 minutes (first mixing), then adding a platinum-based catalyst for hydrogen-silicon crosslinking and a reaction inhibitor, and other components as needed to the resulting mixture, and mixing at 10-100°C for 1-10 minutes, preferably at 20-80°C for 3-7 minutes (second mixing). When adding reinforcing agents, softeners, etc., they can be added during either the first or second mixing stage, but are preferably added during the first mixing stage. When adding other rubber compounding agents, such as metal salts of α,β-unsaturated organic acids, hygroscopic agents, anti-aging agents, fillers, processing aids, activators, plasticizers, adhesive additives, etc., they are preferably added during the first mixing stage; crosslinking aids, crosslinking accelerators, and foaming agents are preferably added during the second mixing stage. If the mixing apparatus used for the first mixing step is capable of high-temperature processing, then various known mixing apparatuses can be used. Specifically, examples include Banbury mixers, kneaders, and extruders. Examples of mixing apparatus used for the second mixing step include rollers, kneaders, and extruders, which allow for easy temperature control. By performing a two-stage mixing process involving a first mixing stage and a second mixing stage, the copolymer (S) and the hydrogen-containing silicone compound (Y) can be mixed at high temperatures during the first mixing stage. This allows for the rapid removal of moisture from the hydrogen-containing silicone compound (Y), which acts as an obstacle to crosslinking. Therefore, since the amount of hydrogen-containing silicone compound (Y) is not required to obtain the copolymer composition, manufacturing costs can be reduced. Furthermore, if the mixing of each component is divided into a first mixing and a second mixing, the mixing time can be shortened compared to mixing all components without segmentation. Moreover, by adding a platinum-based catalyst and reaction inhibitor for hydrosilicone crosslinking, along with organic peroxides, during the second mixing, crosslinking can be inhibited during the first mixing, thus increasing the temperature during the first mixing and removing moisture in a shorter time. [Effects and Effects] The copolymer composition of this sample exhibits lower cross-linking reaction temperatures (e.g., 50-130°C) during mixing and molding, thus suppressing scorching (or early, unintended cross-linking) caused by heat during processing or storage. Furthermore, cross-linking can occur in a sufficiently short time at the cross-linking temperature (e.g., 150-200°C). Therefore, the copolymer composition of this sample exhibits superior storage stability and productivity. <Crosslinked Molded Body> The crosslinking molding system of the present invention is used to crosslink the copolymer composition of the present invention to obtain a crosslinked molded body. The crosslinking molding system obtains the crosslinked molded body by pre-forming the copolymer composition of the present invention into the desired shape using various molding machines such as extruders, burnishing rollers, presses, injection molding machines, and transfer molding machines, or by simultaneously introducing the molded body into a vulcanizing bath for heating and crosslinking. When the copolymer composition of the present invention contains a foaming agent, foaming occurs simultaneously with crosslinking, resulting in a foamed crosslinked molded body (foamed molded body). As a heating method, any known method can be used without restriction. Preferably, a heating bath with heating forms such as far-infrared heating furnace, hot air, glass bead fluid bed, UHF (ultra-short wave electromagnetic wave), steam, or LCM (thermal molten salt bath) is used, and heating is performed at a temperature of 150~200°C for 1~30 minutes. During molding and cross-linking, molds may or may not be used. When molds are not used, the rubber composition is usually molded and cross-linked continuously. Preferably, the copolymer composition of the present invention is subjected to primary crosslinking by compression molding, and the resulting primary molded body is removed from the mold. The primary molded body is then subjected to secondary crosslinking in a heat medium. Specifically, the method can be as follows: the copolymer composition of the present invention is subjected to primary crosslinking by compression molding at 120-200°C for 1-20 minutes, preferably 150-200°C for 10-18 minutes, and the resulting primary molded body is removed from the mold. The primary molded body is then subjected to secondary crosslinking in a heat medium at 120-160°C for 10-24 hours, preferably 140-160°C for 15-20 minutes. The heat medium used for secondary crosslinking is air, steam, paraffin-based processing oil, or molten salt, etc. If crosslinking is performed using compression molding, the crosslinked body will not become too hot due to shear heating. Therefore, it can suppress the generation of low-molecular-weight siloxanes and polymer degradation. Furthermore, although some low-molecular-weight siloxanes may remain inside the crosslinked body during compression molding in a closed state, these siloxanes can be volatilized by subsequent secondary crosslinking using a heat medium, resulting in a crosslinked body with a low amount of low-molecular-weight siloxanes. The cross-linked molded body of this sample is suitable for a variety of applications. Specifically, it is suitable for use in tire rubber, O-rings, industrial rollers, clamps (e.g., condenser clamps), gaskets, belts (e.g., insulating tape, photocopier belts, conveyor belts), automotive hoses and other hoses (e.g., water hoses, brake fluid reservoir hoses, radiator hoses, air hoses), vibration damping rubber, vibration damping or vibration-damping materials (e.g., engine mounts, motor mounts), muffler hangers, sponges (e.g., weatherproof sponges, heat insulation sponges, protective sponges, micro-foamed sponges), cables (ignition cables, cab tire cables, high-voltage cables), wire sheathing materials (high-voltage wire sheathing materials, low-voltage wire sheathing materials, marine wire sheathing materials), glass guide channels, collar sheathing materials, paper feed rollers, roofing sheets, etc. [Effects] The cross-linked molding system obtained from the copolymer composition of the present invention has a large elongation at tensile breaking point and excellent rubber properties. <Seventh State Sample> The method for manufacturing the copolymer composition of the seventh state sample of the present invention is characterized by: mixing the copolymer (S) and the hydrogen-containing silicon compound (Y) at 80-170°C for 1-10 minutes, preferably at 110-170°C for 4-8 minutes (first mixing); then adding a platinum-based catalyst for hydrogen-silicon crosslinking to the resulting mixture; and mixing at 10-130°C for 1-30 minutes, preferably at 10-100°C for 1-10 minutes, and more preferably at 20-80°C for 3-7 minutes (second mixing). In the second mixing, a reaction inhibitor may also be further added. This method for manufacturing the seventh state sample can be applied to the manufacturing of copolymer compositions of states 1-6. Furthermore, the crosslinking molding system of the eighth state of the present invention is a molded body formed by crosslinking the copolymer composition obtained by the manufacturing method of the seventh state. [Copolymer (S)] The copolymer (S) used in the manufacturing method of this sample is the same as the copolymer (S) of the first sample. That is, the copolymer (S) of this sample has the constituent units derived from ethylene (A), the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms, and the constituent units derived from non-conjugated polyenes (C) as described in the first sample, and satisfies the above requirements (i) and (ii). The preferred sample of the copolymer (S) of this sample is the same as that of the first sample. The manufacturing method of the copolymer composition of this sample may also use two or more copolymers (S). [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) used in the manufacturing method of this sample is the same as the hydrogen-containing silicon compound (Y) in the first sample. That is, the hydrogen-containing silicon compound (Y) in this sample has the same structural features as described in the first sample. The preferred state of the hydrogen-containing silicon compound (Y) in this sample is the same as that in the first sample. The manufacturing method of the copolymer composition of this sample may also use two or more hydrogen-containing silicon compounds (Y). [Platinum-based catalyst] The platinum-based catalyst used for hydrosilicone crosslinking in the manufacturing method of this sample is the same as the platinum-based catalyst used for hydrosilicone crosslinking in the first sample, and also the same as in the preferred sample. Two or more platinum-based catalysts may also be used in the manufacturing method of this sample. [Reaction Inhibitor] The reaction inhibitor used in the manufacturing method of this sample is the same as that used in the first sample, and also the same as that used in the preferred sample. The manufacturing method of this sample may also use two or more reaction inhibitors. [Formulating agents, etc.] Antioxidants, anti-aging agents, reinforcing agents, softeners, hygroscopic agents, organic peroxides, crosslinking aids, fillers, processing aids, activators, and other formulating agents, as well as other resins, may be appropriately formulated as in State 1. [Formulation] The amount of hydrogen-containing silicon-based compound (Y) used in the first mixing process relative to 100 parts by mass of copolymer (S) is preferably 0.1 to 30 parts by mass, more preferably 0.1 to 25 parts by mass, even more preferably 0.1 to 20 parts by mass, even more preferably 0.1 to 15 parts by mass, even more preferably 0.1 to 10 parts by mass, even more preferably 1 to 10 parts by mass, particularly preferably 2 to 10 parts by mass, and most preferably 3 to 10 parts by mass. The platinum-based catalyst used in the second mixing process is preferably 0.001 to 10 parts by mass relative to 100 parts by mass of the copolymer (S), more preferably 0.005 to 5.0 parts by mass, even more preferably 0.01 to 3.0 parts by mass, even more preferably 0.02 to 1.0 parts by mass, further preferably 0.03 to 0.7 parts by mass, particularly preferably 0.05 to 0.6 parts by mass, and most preferably 0.1 to 0.5 parts by mass. The reaction inhibitor used in the second mixing process is preferably 0.005 to 5.0 parts by mass relative to 100 parts by mass of the copolymer (S), more preferably 0.01 to 3.0 parts by mass, even more preferably 0.02 to 1.0 parts by mass, still more preferably 0.03 to 0.7 parts by mass, particularly preferably 0.05 to 0.6 parts by mass, and most preferably 0.1 to 0.5 parts by mass. [Mixing] If the mixing device used for the first mixing is capable of high-temperature processing, various known mixing devices can be used. Examples include Banbury mixers, kneaders, and extruders. Examples of mixing devices used for the second mixing include rollers, kneaders, and extruders, which allow for easy temperature control. When adding reinforcing agents, softeners, etc., they can be added during either the first or second mixing stage, but are preferably added during the first mixing stage. When adding other rubber compounding agents, such as organic peroxides, metal salts of α,β-unsaturated organic acids, hygroscopic agents, anti-aging agents, crosslinking aids, crosslinking accelerators, fillers, processing aids, activators, plasticizers, adhesive additives, foaming agents, etc., they can be added during either the first or second mixing stage. [Cross-linked molded body] The copolymer composition obtained by the manufacturing method of this sample is pre-formed into the desired shape by various forming methods such as extrusion molding machine, burnishing roller, press, injection molding machine, transfer molding machine, etc., or the molded body is introduced into a vulcanizing tank for heating and cross-linking at the same time as forming, thereby obtaining a cross-linked molded body formed by cross-linking the copolymer composition. As a heating method, any known method can be used without limitation. Preferably, a heating bath using hot air, a glass bead fluid bed, UHF (ultra-short wave electromagnetic wave), steam, or LCM (thermal molten salt bath) is used, and heating is performed at a temperature of 150-200°C for 1-30 minutes. During molding and crosslinking, a mold may or may not be used. When a mold is not used, the copolymer composition is typically molded and crosslinked continuously. The cross-linked molded body obtained from the copolymer composition produced by the manufacturing method of this sample can be used for a variety of applications. Specifically, it is suitable for use in tire rubber, O-rings, industrial rollers, clamps (e.g., condenser clamps), gaskets, belts (e.g., insulating tape, photocopier belts, conveyor belts), hoses such as automotive hoses (e.g., water hoses, brake fluid reservoir hoses, radiator hoses, air hoses), vibration damping rubber, vibration damping or vibration-damping materials (e.g., engine mounts, motor mounts), muffler hangers, sponges (e.g., weatherproof sponges, heat-insulating sponges, protective sponges, micro-foamed sponges), cables (ignition cables, cab tire cables, high-voltage cables), wire sheathing materials (high-voltage wire sheathing materials, low-voltage wire sheathing materials, marine wire sheathing materials), glass guide channels, collar sheathing materials, paper feed rollers, roofing sheets, etc. [Effects] In this cross-linked molded article, the copolymer (S) and the hydrogen-containing silicone compound (Y) are mixed at high temperature during the first mixing process. Therefore, the moisture in the hydrogen-containing silicone compound (Y), which hinders cross-linking, can be removed in a short time. Thus, since the amount of hydrogen-containing silicone compound (Y) is not increased to obtain the copolymer composition, manufacturing costs can be reduced. The manufacturing method of this sample, by performing mixing of the components in two separate processes—first mixing and second mixing—shortens the mixing time compared to the method without distinguishing between the first and second mixing. Furthermore, by adding a platinum-based catalyst and reaction inhibitor for hydrogen-silicon crosslinking during the second mixing, crosslinking can be inhibited during the first mixing, thereby increasing the temperature during the first mixing and allowing for moisture removal in a shorter time. The cross-linked molded body obtained by cross-linking the copolymer composition obtained according to the manufacturing method of this sample has a small compression set. The reason for this has not yet been explained, but it is believed that the main reason is the high cross-linking density and uniform cross-linking structure. <Eighth State Sample> The method for manufacturing the copolymer composition of the eighth state sample of the present invention is characterized by: melt-blending the copolymer (S), the hydrogen-containing silicon-based compound (Y), and the platinum-based catalyst, followed by pressing and molding at 120-200°C for 1-20 minutes, preferably 150-200°C for 10-18 minutes, to achieve primary crosslinking; obtaining a primary molded body by removing it from a mold; and then subjecting the obtained primary molded body to secondary crosslinking in a heat medium at 120-160°C for 10-24 hours, preferably 140-160°C for 15-20 minutes, to produce a crosslinked molded body. Alternatively, a reaction inhibitor can be further added to the copolymer (S), the hydrogen-containing silicon-based compound (Y), and the platinum-based catalyst for further melt-blending. The heat medium used for secondary crosslinking can be air, steam, paraffin-based processing oil, or molten salt, etc. This method for manufacturing the eighth state sample can be applied to the manufacture of crosslinked molded bodies using copolymer compositions of states 1-6. [Copolymer (S)] The copolymer (S) used in the manufacturing method of this sample is the same as the copolymer (S) of the first sample. That is, the copolymer (S) of this sample has the constituent units derived from ethylene (A), the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms, and the constituent units derived from non-conjugated polyenes (C) as described in the first sample, and satisfies the above requirements (i) and (ii). The preferred sample of the copolymer (S) of this sample is the same as that of the first sample. The manufacturing method of the copolymer composition of this sample may also use two or more copolymers (S). [Hydrogen-containing silicon compound (Y)] The hydrogen-containing silicon compound (Y) used in the manufacturing method of this sample is the same as the hydrogen-containing silicon compound (Y) in the first sample. That is, the hydrogen-containing silicon compound (Y) in this sample has the same structural features as described in the first sample. The preferred state of the hydrogen-containing silicon compound (Y) in this sample is the same as that in the first sample. The manufacturing method of the copolymer composition of this sample may also use two or more hydrogen-containing silicon compounds (Y). [Platinum-based catalyst] The platinum-based catalyst used for hydrosilicone crosslinking in the manufacturing method of this sample is the same as the platinum-based catalyst used for hydrosilicone crosslinking in the first sample, and also the same as in the preferred sample. Two or more platinum-based catalysts may also be used in the manufacturing method of this sample. [Reaction Inhibitor] The reaction inhibitor used in the manufacturing method of this sample is the same as that used in the first sample, and also the same as that used in the preferred sample. The manufacturing method of this sample may also use two or more reaction inhibitors. [Formulating agents, etc.] Antioxidants, anti-aging agents, reinforcing agents, softeners, hygroscopic agents, organic peroxides, crosslinking aids, fillers, processing aids, activators, and other formulating agents, as well as other resins, may be appropriately formulated as in State 1. [Formulation] In the method for manufacturing the cross-linked molded body of this sample, the amount of hydrogen-containing silicon-based compound (Y) relative to 100 parts by weight of copolymer (S) is preferably 0.1 to 30 parts by weight, more preferably 3 to 10 parts by weight. The amount of platinum-based catalyst relative to 100 parts by weight of copolymer (S) is preferably 0.001 to 10 parts by weight, more preferably 0.1 to 0.5 parts by weight. The amount of reaction inhibitor relative to 100 parts by weight of copolymer (S) is preferably 0 to 2 parts by weight, more preferably 0 to 0.8 parts by weight. [Mixing] In the manufacturing method of the cross-linked molded body of this state, if the mixing device used for mixing is a device that can perform high-temperature processing, then various known mixing devices can be used. Specifically, examples include closed mixing machines such as Banbury mixers, kneaders, and intermixers. [Cross-linked Molded Body] The cross-linked molded body obtained by the manufacturing method of this sample can be used for various applications. Specifically, it is suitable for use in tire rubber, O-rings, industrial rollers, clamps (e.g., condenser clamps), gaskets, belts (e.g., insulating tape, photocopier belts, conveyor belts), hoses such as automotive hoses (e.g., water pipes, brake fluid reservoir hoses, radiator hoses, air hoses), vibration damping rubber, vibration damping materials or vibration-damping materials (e.g., engine mounts, motor mounts), muffler hangers, sponges (e.g., weatherproof sponges, heat insulation sponges, protective sponges, micro-foamed sponges), cables (ignition cables, flexible cables, high-voltage cables), wire sheathing materials (high-voltage wire sheathing materials, low-voltage wire sheathing materials, marine wire sheathing materials), glass guide channels, collar sheathing materials, paper feed rollers, roofing sheets, etc. [Effects and Effects] Since the manufacturing method of this sample involves a single crosslinking step via compression molding, the crosslinked body does not become excessively hot due to shear heating. Therefore, it can suppress the formation of low-molecular-weight siloxanes and polymer degradation. Furthermore, if a single crosslinking step is performed via injection molding, the crosslinked body becomes extremely hot due to shear heating as it is injected from the nozzle into the mold at high speed, easily leading to the formation of low-molecular-weight siloxanes and polymer degradation. Furthermore, since the crosslinking is carried out in a closed state during the compression molding of the first crosslinking stage, a certain amount of low-molecular-weight silicates are retained inside the crosslinked body. However, in the manufacturing method of this sample, the low-molecular-weight silicates are volatilized by secondary crosslinking in a heat medium, resulting in a crosslinked body with a smaller amount of low-molecular-weight silicates. The cross-linked molded body obtained by the manufacturing method of this sample has a small compressive permanent strain. The reason for this has not yet been explained, but it is believed to be due to the high cross-linking density and uniform cross-linking structure. In the copolymer composition of the present invention, the DURO A hardness, measured by the method described in the examples, is preferably 70 or less, more preferably 3 to 65, and even more preferably 5 to 60. In the copolymer composition of the present invention, the DURO C hardness, measured by the method described in the examples, is preferably 50 or less, more preferably 10 to 40, and even more preferably 15 to 35. In the copolymer composition of the present invention, the tensile elongation at break EB (%), measured by the method described in the examples, is preferably 600% or less, more preferably 100 to 600%, and even more preferably 150 to 500%. In the copolymer composition of the present invention, the tensile stress TB (MPa), measured by the method described in the examples, is preferably 15 MPa or less, more preferably 0.5 to 15 MPa, and even more preferably 0.7 to 13 MPa. In the copolymer composition of the present invention, the tensile product measured by the method described in the examples is preferably 5000 or less, more preferably 100 to 5000, and even more preferably 200 to 4500. In the copolymer composition of the present invention, the M25 measured by the method described in the examples is preferably 1.0 MPa or less, more preferably 0.03 to 0.60 MPa, and even more preferably 0.05 to 0.55 MPa. In the copolymer composition of the present invention, the M50 measured by the method described in the examples is preferably 1.0 MPa or less, more preferably 0.05 to 0.90 MPa, and even more preferably 0.08 to 0.85 MPa. In the copolymer composition of the present invention, the M100 measured by the method described in the examples is preferably 3.0 MPa or less, more preferably 0.05 to 2.5 MPa, and even more preferably 0.1 to 2.0 MPa. In the copolymer composition of the present invention, the M200 measured by the method described in the examples is preferably 5.5 MPa or less, more preferably 0.1 to 5.0 MPa, and even more preferably 0.2 to 4.5 MPa. In the copolymer composition of the present invention, the M300 measured by the method described in the examples is preferably 9.0 MPa or less, more preferably 0.3 to 8.5 MPa, and even more preferably 0.5 to 8.0 MPa. In the copolymer composition of the present invention, the CS (compression ratio) after heat treatment at 150°C for 22 hours and with a compression ratio of 25%, as measured by the method described in the examples, is preferably 60% or less, more preferably 3 to 55%, and even more preferably 5 to 50%. In the copolymer composition of the present invention, the CS (compression ratio) after heat treatment at 120°C for 72 hours and with a compression ratio of 25%, as measured by the method described in the examples, is preferably 20% or less, more preferably 3-18%, and even more preferably 5-15%. In the copolymer composition of the present invention, the CS after heat treatment at 100°C for 22 hours and with a compression ratio of 50%, as measured by the method described in the examples, is preferably 20% or less, more preferably 1-15%, and even more preferably 3-13%.In the copolymer composition of the present invention, the CS (constituent gravity) after heat treatment at 70°C for 22 hours and with a compression ratio of 50%, as measured by the method described in the examples, is preferably 30% or less, more preferably 1-25%, and even more preferably 3-20%. In the copolymer composition of the present invention, the specific gravity (Mg(metric ton) / m³) as measured by the method described in the examples is... 3 The preferred value is 0.65 Mg / m 3 The following, or preferably, values ​​are 0.1~0.60 Mg / m 3 Even better is 0.2~0.55Mg / m 3 In the copolymer composition of the present invention, the water absorption rate, as measured by the method described in the examples, is preferably 10% or more, more preferably 15-70%, and even more preferably 20-50%. In the copolymer composition of the present invention, the content (ppm) of the low molecular weight component, as measured by the method described in the examples, is preferably 10 ppm or less, more preferably 5 ppm or less, and even more preferably 3 ppm or less. In the copolymer composition of the present invention, the crosslinking density, as measured by the method described in the examples, is preferably 0.1 × 10⁻⁶. 19 ~20×10 19 pcs / cc, preferably 0.3×10 19 ~15×10 19 pcs / cc, or even better, 0.5×10 19 ~13×10 19 pcs / cc. In the copolymer composition of the present invention, the type B viscosity, as measured by the method described in the examples, is preferably 500-7000 Pa·s, more preferably 800-6500 Pa·s, and even more preferably 1000-6000 Pa·s. [Examples] The present invention will now be described in more detail with reference to embodiments, but the present invention is not limited to the embodiments. <Test Methods> The physical properties of the uncrosslinked copolymer compositions and molded articles obtained in each example were evaluated using the following test methods. [Crosslinking Behavior of Copolymer Compositions] Using the uncrosslinked copolymer compositions from each example, the following values ​​were obtained from the crosslinking curves measured at the crosslinking temperatures and crosslinking times shown in the tables, according to JIS K6300-2. The measurements were performed using an MDR2000 (manufactured by Alpha Technology). "S' max (dNm): Maximum torque value S' max "S' min "(dNm): Minimum torque value S'" min "S' max - S' min (dNm): Maximum torque value S' max With minimum torque value S' min The difference. "tcx" 1” (min): The minimum torque value S' min From, to reach is equivalent to "S". max - S' min "of x" 1% of the torque value, and the minimum torque value S' min The time up to the sum of the torque values. For example, "tc10" is based on the minimum torque value S'. min From, to reach is equivalent to "S". max - S' min The torque value of 10% and the minimum torque value S' min The time until the sum of the torque values ​​is reached. "tsx" 2” (min): From the minimum torque value S' min Start, rise to torque value x The time up to 2 (dNm). For example, "ts1" is based on the minimum torque value S' min The time from the start to the torque value reaching 1 (dNm). "MCR" (dNm / min): The maximum rate of change of torque in the cross-linking curve. [Hardness Test (Duro A Hardness)] According to JIS K 6253-3, the hardness (Type A hardness tester, HA) of sheet-shaped molded articles is determined using six 2mm sheet-shaped rubber molded articles with smooth surfaces, stacked with the flat portions to a thickness of approximately 12mm. Test pieces containing foreign matter, air bubbles, or scratches are not used. Furthermore, the measurement surface of the test piece is designed so that the tip of the pusher can be positioned at least 12mm from the end of the test piece for measurement. [Hardness Test (Duro C Hardness)] According to JIS K 7312, under the conditions of mandrel No.7, 1 rpm, and 25°C, six 2mm sheet-shaped rubber molded articles with smooth surfaces are stacked to a thickness of approximately 6mm. Test pieces containing foreign matter, air bubbles, or scratches are not used. Furthermore, the measurement surface of the test piece is designed so that the tip of the pusher can be positioned at least 12mm from the end of the test piece for measurement. [Tension Test] A dumbbell-shaped test piece, type 3, as described in JIS K 6251 (1993), was prepared by punching through the molded bodies of each example. Using this test piece, a tensile test was conducted under the conditions of a test temperature of 25°C and a tensile speed of 500 mm / min, according to the method specified in Section 3 of JIS K 6251. The modulus (MPa), tensile fracture stress TB (MPa), and tensile fracture elongation EB (%) were measured. The product of TB and EB was taken as the tensile product. Furthermore, the number after M indicating the modulus is the elongation, for example, "M25" means the modulus with an elongation of 25% (25% modulus). [Compression Settlement (CS) of Tubular Molded Body] A 30mm section was cut lengthwise from the tubular molded body, and the resulting test piece was mounted in a compression settling mold. The test piece was compressed to half its initial height (50% compression ratio) and, together with the mold, placed in a gear oven at the temperatures and times indicated in the tables for heat treatment. The test piece was then removed from the mold and allowed to cool for 30 minutes. The height of the test piece was measured, and the compression settling strain (CS) (%) was calculated using the following formula: Compression Settling Strain (CS) (%) = {(t0-t1) / (t0-t2)} × 100 t0: Height of the test piece before testing; t1: Height of the test piece after heat treatment and cooling for 30 minutes; t2: Height of the test piece mounted in the testing mold. [Compression Settlement (CS) of Sheet Molded Bodies] Five 2mm thick sheet molded bodies were overlapped and mounted in a compression settling mold. The height of the test piece was compressed to 3 / 4 of its height before applying the load (compression ratio 25%), and then heat-treated together with the mold in a gear oven at the temperatures shown in the tables for the times shown in the tables. The test pieces were then removed from the mold, cooled for 30 minutes, and the height of the test piece was measured. The compression settling strain (CS) (%) was calculated using the following formula: Compression settling strain (CS) (%) = {(t0-t1) / (t0-t2)} × 100 t0: Height of the test piece before the test t1: Height of the test piece after heat treatment and cooling for 30 minutes t2: Height of the test piece mounted in the measuring mold [Specific gravity of foamed molded body] The specific gravity of the foamed molded body was determined by the water displacement method (JIS K 6268) using a 20mm×20mm test piece of a tubular foamed molded body that has been cross-linked by hot air. [Water Absorption Rate of Foamed Molded Body] A 20mm × 20mm test piece was punched through a tubular foamed molded body that had undergone hot air cross-linking. Surface dirt was wiped off with ethanol. The test piece was then depressurized to -625mmHg at a position 50mm below the water surface and maintained for 3 minutes. After restoring to atmospheric pressure and waiting for 3 minutes, the weight of the water-absorbed test piece was measured. The water absorption rate was calculated using the following formula: (Water Absorption Rate) = {(W2 - W1) / W1} W1: Weight before immersion (g) W2: Weight after immersion (g) [Low Molecular Weight Component Content] 1.0 g of sample from each molded specimen was accurately weighed into a 10 mL headspace sampling vial. After sealing, the low molecular weight components were determined according to the headspace GC / MS conditions described below. Static headspace GC / MS Heating temperature / time: 190℃ × 5 min, Quantification: Quantitative analysis based on toluene conversion. Analytical apparatus (Agilent Technologies). Headspace sampler: G1888 (Agilent Technologies). GC / MS: HP6890N / NP5973. Column: HP-3MS 0.25 mm 30 mm. Film thickness: 0.25 μm. [Crosslinking Density] The crosslinking density ν is calculated using the following Flory-Rehner equation (I) for equilibrium swelling. In equation (I), ν... R It was obtained by toluene extraction of a cross-linked 2mm sheet at 37℃ for 72 hours. [Number 7] V R V: Volume fraction of pure rubber in swelled cross-linked rubber 0: Molecular volume of solvent (toluene) (108.15cc@37℃) μ: Interaction constant between rubber and solvent (EPDM-toluene: 0.49) A: Avergaric number [Crosslinking rate of copolymer composition] Using uncrosslinked copolymer compositions from each example, the following values ​​were obtained from the crosslinking curves measured when heated at a predetermined crosslinking temperature according to JIS K6300-2. The measurements were performed using an MDR2000 (manufactured by Alpha Technology). "S' max (dNm): Maximum torque value S' max "S' min "(dNm): Minimum torque value S'" min "S' max - S' min (dNm): Maximum torque value S' max With minimum torque value S' min The difference. "125℃ (TS1) points": Under conditions of 125℃, taking the start of the measurement as the baseline, from the minimum torque value S' min The time it takes for the torque value to rise to 1 (dNm). "180℃ (tc90) min": The time taken from the start of measurement to the point equivalent to "S" under conditions of 180℃. max - S' min The time until 90% of the torque value is reached. [Odor] The uncrosslinked copolymer compositions were pressed at 50°C for 10 minutes to obtain sheet-like molded bodies with a smooth surface and a thickness of 3 mm. These were then placed in an aging test chamber at 240°C for 6 minutes to induce crosslinking, resulting in crosslinked molded bodies. The odor of the obtained crosslinked molded bodies was evaluated according to the following criteria: ○: No unpleasant odor; ╳: Unpleasant odor. [Surface Adhesion] The uncrosslinked copolymer compositions were pressed at 50°C for 10 minutes to obtain sheet-like molded bodies with a smooth surface and a thickness of 3 mm. These were then placed in an aging test chamber at 240°C for 6 minutes to induce crosslinking, resulting in crosslinked molded bodies. The surface of each crosslinked molded body was touched with a finger and evaluated according to the following criteria: ○: No stickiness when touched by hand ╳: Stickiness when touched by hand [Damage Resistance] Uncrosslinked copolymer compositions were pressed at 50°C for 10 minutes to obtain sheet-like molded bodies with a smooth surface and a thickness of 3 mm. These were then placed in an aging test chamber at 240°C for 6 minutes to induce crosslinking, resulting in crosslinked molded bodies. The surface of each crosslinked molded body was immediately scratched with a brass rod with a flat, circular tip (3 mm in diameter) after removal from the aging test chamber, and evaluated according to the following criteria. The evaluation was conducted by three functional inspectors, and the average value was calculated. 5: No scratches 4: Very minor scratches 3: Slight scratches 2: Scratches present 1: Obvious scratches [Hardness Test (Duro A Hardness)] The uncrosslinked copolymer compositions of each example were pressed at 180°C for 10 minutes to obtain sheet-like molded bodies with a thickness of 2 mm. Six of the obtained crosslinked molded bodies were stacked to obtain a test piece with a thickness of 12 mm. The hardness (Duro-A) was determined according to JIS K 6253-3. Furthermore, the size of the measuring surface of the test piece was designed so that the tip of the pusher could be positioned at least 12 mm away from the end of the test piece for measurement. [Tension Test] The uncrosslinked copolymer compositions of each example were pressed at 180°C for 10 minutes to obtain sheet-like molded bodies with a thickness of 2 mm. The crosslinked molded bodies of each example were punched through to prepare the No. 3 dumbbell test piece as described in JIS K 6251 (1993). Using this test piece, a tensile test was performed according to the method specified in Section 3 of JIS K 6251, under the conditions of a test temperature of 23°C and a tensile speed of 500 mm / min. The tensile stress at the breaking point TB (MPa) and the tensile elongation at the breaking point EB (%) were measured. [Compression Settlement (CS) of Sheet Molded Bodies] Uncrosslinked copolymer compositions were crosslinked by heating at 180°C for 15 minutes using a compression molding machine fitted with a cylindrical mold. According to JIS K 6262, crosslinked bodies with a diameter of 29 mm and a height (thickness) of 12.5 mm were used as test pieces. The test pieces were compressed by 25% relative to their initial height (12.5 mm) before applying load, and then heat-treated with spacers in an aging test chamber at 120°C for 72 hours. Afterward, the test pieces were removed, allowed to stand at room temperature for 30 minutes, and their height was measured. The compression settling strain (%) was calculated using the following formula: Compression settling strain (%) = {(t0-t1) / (t0-t2)} × 100 t0: Height of the test piece before the test t1: Height of the test piece after treatment under the above conditions and standing at room temperature for 30 minutes t2: Height of the test piece mounted in the measuring mold <Copolymers> The copolymer systems used in each example were manufactured according to the methods described in the following manufacturing examples. The relevant values ​​of components (i) to (v) of the copolymers obtained in each manufacturing example are shown in Table 1. [Manufacturing Example 1: Manufacturing of copolymer (S-1)] The copolymer (S-1) was manufactured in the same manner as in Manufacturing Example 1 of Japanese Patent Application Publication No. 2018-131527. [Manufacturing Example 2: Manufacturing of Copolymer (S-2)] In the method for manufacturing ethylene-propylene and VNB copolymer described in Example 1 (paragraphs

[0386] to

[0391] ) of International Patent Publication No. 2019 / 180802, the hydrogen loading amount was changed to 50 liters / hr to manufacture copolymer (S-2). [Manufacturing Example 3: Manufacturing of Copolymer (A-1)] A terpolymerization of ethylene, propylene, and 5-vinyl-2-norphene was continuously carried out in a stainless steel polymerizer with a 100-liter internal volume and stirring blades (stirring speed = 250 rpm). The liquid phase was supplied via the side of the polymerizer at a rate of 60 liters of hexane, 3.0 kg of ethylene, 9.0 kg of propylene, and 550 g of VNB per hour, with 50 liters of hydrogen and VOCl as a catalyst. 395 millimoles, Al(Et) 2Cl 443 mmol, Al(Et) 1.5 Cl 1.5 The supply is continuously provided at a rate of 127 millimoles. As a result, a copolymer of ethylene-propylene-VNB random copolymer rubber (A-1) was obtained in a homogeneous solution state. Subsequently, a small amount of methanol was added to the polymerization solution continuously drawn from the bottom of the polymerizer to stop the polymerization reaction. After separating the polymer from the solvent by steam stripping, it was vacuum dried at 55°C for 48 hours to produce the copolymer (A-1). [Table 1] <Cross-linking agent> The cross-linking agents used in each example are as follows. [Crosslinking agent (Y-1-1)] 536 g of methylhydrogen polysiloxane of formula (a-1-1) was packed into a reactor and heated to 40 °C under nitrogen flow with stirring. 0.4 g of a toluene solution (Pt concentration 0.3 wt%) of a platinum-1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane complex was added, and 265 g of α-methylstyrene was added dropwise while maintaining the reaction temperature at 40~90 °C. [Chemistry 11] After the dripping was completed, the mixture was stirred at 85°C for 2 hours. 0.5g of the reaction solution was then collected, and the reaction rate of the Si-H groups was confirmed to be approximately 36% using the alkaline decomposition gas generation method (the remaining Si-H groups were decomposed using an ethanol / water solution of KOH, and the reaction rate of the Si-H groups was calculated from the volume of hydrogen gas produced). The reaction solution was then heated to 135°C under reduced pressure for 2 hours to remove low-boiling-point components, yielding 673g of the crosslinking agent (Y-1-1). The obtained crosslinking agent (Y-1-1) is obtained by means of 29 Si-NMR confirmed it to be the compound shown in formula (a-1). The viscosity of the obtained crosslinking agent (Y-1-1) was measured at 25°C using an Ubbelohde viscometer according to JIS-Z-8803, and the result was 26 mm. 2 / s. [Chemistry 12] [Crosslinking agent (Y-1-2)] 370 g of methylhydrogen polysiloxane as shown in formula (a-2-1) was packed into a reactor and heated to 80 °C under nitrogen flow with stirring. 0.45 g of a toluene solution (Pt concentration 0.3 wt%) of a platinum-1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane complex was added, and 280 g of α-methylstyrene was added dropwise while maintaining the reaction temperature at 80~120 °C. [Chemistry 13] After the dripping was completed, the mixture was stirred at 145°C for 1 hour. 0.5 g of the reaction solution was then taken, and the reaction rate of the Si-H groups was confirmed to be approximately 50% using the alkaline decomposition gas generation method (the remaining Si-H groups were decomposed using an ethanol / water solution of KOH, and the reaction rate of the Si-H groups was calculated from the volume of hydrogen produced). The reaction solution was then heated to 145°C under reduced pressure for 1 hour to remove low-boiling-point components, yielding 600 g of crosslinking agent (Y-1-2). The obtained crosslinking agent (Y-1-2) is obtained by means of 29 Si-NMR confirmed the compound as shown in formula (a-2). The viscosity of the obtained crosslinking agent (Y-1-2) was measured at 25°C using an Ubbelohde viscometer with a JIS-Z-8803, yielding a result of 72 mm. 2 / s. [Chemistry 14] [Crosslinking agent (Y-2)] The compound shown in formula (a-3) below. [Chemistry 15] <Other Ingredients> The other ingredients used in each example are as follows. Organic peroxide (Z-1): PERHEXA 25B-40 (Nippon Oil Co., Ltd.), 2,5-dimethyl-2,5-di(tert-butylperoxide)hexane (40% purity, by mass), 1-minute half-life, temperature 179.8°C. Organic peroxide (Z-2): PERCUMYL (registered trademark) D-40 (Nippon Oil Co., Ltd.), dicumyl peroxide (40% purity, by mass), 1-minute half-life, temperature 175.2°C. Catalyst 1: A complex of platinum chloride and 1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane. Catalyst 2: Toray Industries, Dow Chemical Co., Ltd., SRX212 Catalyst, a complex salt of platinum chloride and 1,3-divinyltetramethyldisiloxane. Reaction Inhibitor 1: Ethyl-1-octyne-3-ol. Reaction Inhibitor 2: Nissin Chemical Industries, Ltd., 1-ethynyl-1-cyclohexanol. Processing Oil 1: Diana Process PW-380, manufactured by Idemitsu Kosan Co., Ltd., a paraffin-based processing oil. Processing Oil 2: Diana Process PS-430, manufactured by Idemitsu Kosan Co., Ltd., a paraffin-based processing oil. Processing Oil 3: Diana Process PW-32, manufactured by Idemitsu Kosan Co., Ltd., a paraffin-based processing oil. Carbon Black 1: Asahi Carbon (Stock) Co., Ltd., Asahi #60G Carbon Black 2: Asahi Carbon (Stock) Co., Ltd., Asahi #50HG Carbon Black 3: Asahi Carbon (Stock) Co., Ltd., Asahi #60UG, FEF Carbon Black Heavy Calcium Carbonate: Shiraishi Calcium (Stock) Co., Ltd., WHITON SB Calcium Carbonate: Shiraishi Kogyo (Stock) Co., Ltd., Bai Yanhua CC Precipitated Silicon Dioxide: Tosoh SILICA (Stock) Co., Ltd., Nipsil VN3 Calcium Oxide 1: Inoue Lime Industry (Stock) Co., Ltd., VESTA PP Calcium Oxide 2: Inoue Lime Industry (Stock) Co., Ltd., VESTA BS Antioxidant: Irganox 1010 manufactured by BASF JAPAN; Titanium oxide: R-820 manufactured by Ishihara Sangyo; Blue composite oxide pigment: DAIPIROXIDE BLUE manufactured by Dai Nippon Seika; Red pigment: PIGMOTEX RED 102 ET manufactured by Sanyo Pigmentation Co., Ltd.; Yellow pigment: PIGMOTEX YELLOW 83 ET manufactured by Sanyo Pigmentation Co., Ltd.; Calcined kaolin: TRANSLINK-37 manufactured by BASF JAPAN. Sodium bicarbonate 1: Manufactured by Yung-Ho Chemical Industry Co., Ltd., FE-507R; Sodium bicarbonate 2: Manufactured by Yung-Ho Chemical Industry Co., Ltd., FE-507. The values ​​of sodium bicarbonate 1 and sodium bicarbonate 2 obtained from the cumulative distribution curves of the number of concavity and convexity and the cumulative distribution curves of the number of equivalent circle diameters are shown in Table 2. [Table 2] <Examples 1-1~1-7> [Preparation of Uncrosslinked Components] As the first stage, using a BB-4 type Banley mixer (manufactured by Kobe Steel), the raw materials shown in Raw Material 1 of Tables 3 and 4 were mixed at 140°C for 2 minutes. Afterwards, the mixture was swept up by a ram and then mixed for another minute, discharged at approximately 150°C to obtain the first-stage formulation. The Munich viscosity of the first-stage formulation is shown in Tables 3 and 4. Next, as the second stage, the formulation obtained in the first stage was rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for the front roller and 50°C for the rear roller, a rotation speed of 16 rpm for the front roller and 18 rpm for the rear roller), and the raw materials shown in Raw Material 2 in Tables 3 and 4 were added to it. The mixture was then kneaded for 10 minutes to obtain the uncrosslinked composition of each example. [Preparation of sheet-like cross-linked molded body] The uncross-linked components of each example were pressed in a mold at 180°C for 10 minutes using a compression molding machine to obtain a sheet-like cross-linked molded body with a thickness of 2 mm. [Evaluation] For the uncrosslinked components of each example, the crosslinking behavior was measured when the crosslinking temperature was set to 90°C and the crosslinking time was set to 90 minutes (low-temperature crosslinking), and the crosslinking behavior was measured when the crosslinking temperature was set to 180°C and the crosslinking time was set to 30 minutes (high-temperature crosslinking). The results are shown in Tables 3 and 4. As shown in Tables 3 and 4, it can be seen that the molded articles obtained in Examples 1-1 to 1-7 have superior physical properties or processability. As shown in Tables 3 and 4, Examples 1-1 to 1-7, which used crosslinking agents (Y-1-1) or (Y-1-2), exhibited larger ts values ​​during low-temperature crosslinking compared to Example 1-8, which used crosslinking agent (Y-2), demonstrating superior charring resistance. Furthermore, it can be seen that the tc90 during high-temperature crosslinking in Examples 1-1 to 1-7 was less than 10 minutes, indicating a sufficient crosslinking speed. Additionally, the crosslinked molded bodies in Examples 1-1 to 1-7 showed a larger tensile volume than those in Example 1-8, exhibiting superior elongation characteristics. [Table 3] [Table 4] <Examples 2-1~2-4> [Preparation of Uncrosslinked Components] As the first stage, using a BB-4 type Banley mixer (manufactured by Kobe Steel), the raw materials shown in Raw Material 1 of Table 5 were mixed at 140°C for 2 minutes. Afterwards, the mixture was swept up by a punch and then mixed for another minute, discharged at approximately 150°C to obtain the first-stage formulation. Next, as the second stage, the formulation obtained in the first stage was rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for the front roller and 50°C for the rear roller, a rotation speed of 16 rpm for the front roller and 18 rpm for the rear roller), and the raw materials shown in Raw Material 2 of Table 5 were added to it. The mixture was then kneaded for 10 minutes to obtain the uncrosslinked composition of each example. [Preparation of Tubular Foamed Molded Articles] The uncrosslinked components of each example were extruded using a 50mm ϕ extruder [Made by Mitsuba Corporation; L / D=16] with a pre-loaded tubular die (10mm inner diameter, 1mm wall thickness) at a die temperature of 80°C, a cylinder temperature of 60°C, and a screw temperature of 50°C to form a tubular shape. This molded article was then crosslinked in a HAV (hot air vulcanizing tank) at 230°C for 5 minutes to obtain a tubular foamed molded article. [Evaluation] For the uncrosslinked components of each example, the crosslinking behavior was measured with a crosslinking temperature of 180°C and a crosslinking time of 15 minutes. The results are shown in Table 5. As shown in Table 5, the physical properties or processability of the molded articles obtained in all examples are excellent. As shown in Table 5, the tc90 of all examples is less than 10 minutes, indicating that sufficient crosslinking speed was obtained during crosslinking. Furthermore, the evaluation results of the sponge properties of the sheet-like foamed molded bodies in each example are shown in Table 5. As shown in Table 5, Examples 2-1 and 2-2 using sodium bicarbonate 1 have a lower specific gravity than Examples 2-3 and 2-4 using sodium bicarbonate 2. Also, their water absorption rate is higher than that of Example 2-3. Furthermore, the evaluation results of the compressive settling strain (CS) of the tubular foamed molded bodies in each example are shown in Table 5. As shown in Table 5, the compressive settling strain (CS) of Examples 2-1 and 2-2 is lower than that of Example 2-3. [Table 5] <Examples 3-1~3-3> [Preparation of the Uncrosslinked Components in Example 3-1] As the first stage, using a BB-4 type Banley mixer (manufactured by Kobe Steel), the raw materials shown in Raw Material 1 of Table 5 were mixed at 120°C for 5 minutes. Afterwards, the mixture was swept up by a ram and then mixed for another minute, discharged at approximately 150°C to obtain the formulation for the first stage. Next, as the second stage, the formulation obtained in the first stage is rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for the front roller and 50°C for the rear roller, a rotation speed of 16 rpm for the front roller and 18 rpm for the rear roller), and the raw materials shown in raw material 2 of Table 6 are added to it. After mixing for 5 minutes, the mixture is compressed into strips to obtain an uncrosslinked composition. [Preparation of Uncrosslinked Components in Examples 3-2 and 3-3] As the first stage, using a BB-4 type Banley mixer (manufactured by Kobe Steel), the raw materials shown in Raw Material 1 of Table 5 were mixed at 120°C for 5 minutes. Afterwards, the mixture was swept up by a punch and then mixed for another minute, discharged at approximately 150°C to obtain the formulation for the first stage. Next, as the second stage, the formulation obtained in the first stage was rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for the front roller and 50°C for the rear roller, a rotation speed of 16 rpm for the front roller and 18 rpm for the rear roller), and the raw materials shown in raw material 2 of Table 6 were added to it. After mixing for 10 minutes, the mixture was compressed into strips to obtain the uncrosslinked composition of each example. [Preparation of sheet-like cross-linked molded body] The uncross-linked components of each example were pressed in a mold at 180°C for 10 minutes using a compression molding machine to obtain a sheet-like cross-linked molded body with a thickness of 2 mm. [Evaluation] For the uncrosslinked components of each example, the crosslinking behavior (high-temperature crosslinking) was measured when the crosslinking temperature was set to 180°C and the crosslinking time was set to 15 minutes. The results are shown in Table 6. As shown in Table 6, it can be seen that the physical properties or processability of the resulting molded articles in all examples are superior. As shown in Table 6, it can be seen that the tc90 of all examples is less than 10 minutes, and sufficient crosslinking speed is obtained during crosslinking. Furthermore, the evaluation results of the physical properties of the crosslinked molded articles in each example are shown in Table 6. Among them, as shown in Table 6, Example 3-1, in which the crosslinking agent was mixed in the first stage, has a smaller compressive permanent strain (CS) than Examples 3-2 and 3-3, in which the crosslinking agent was mixed in the second stage. [Table 6] <Examples 4-1~4-4> [Preparation of Uncrosslinked Components] As the first stage, using a BB-4 type Banley mixer (manufactured by Kobe Steel), the raw materials shown in Raw Material 1 of Table 7 were mixed at 120°C for 5 minutes to obtain the first stage formulation. Next, as the second stage, the formulation obtained in the first stage was rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for the front roller and 50°C for the rear roller, a rotation speed of 16 rpm for the front roller and 18 rpm for the rear roller), and the raw materials shown in Raw Material 2 of Table 7 were added to it. After mixing for 5 minutes, the uncrosslinked composition of each example was obtained. [Preparation of the cross-linked molded body in Example 4-1] The uncross-linked components were pressed in a mold at 180°C for 15 minutes using a compression molding machine to obtain a sheet-like primary cross-linked body with a thickness of 2 mm. Next, the primary cross-linked body was subjected to secondary cross-linking at 150°C for 16 hours using a high-temperature thermostat (product name: horizontal high-temperature furnace PHH-202, manufactured by ESPEC). This yielded the cross-linked molded body of Example 4-1. [Preparation of cross-linked molded body in Example 4-2] The primary cross-linked body obtained in Example 4-1 is used as the cross-linked molded body in Example 4-2. [Preparation of cross-linked molded body in Example 4-3] The primary cross-linked body obtained in Example 4-1 was subjected to secondary cross-linking at 180°C for 2 hours using a high-temperature thermostat (product name: horizontal high-temperature furnace PHH-202, manufactured by ESPEC (stock)) to obtain the cross-linked molded body in Example 4-3. [Preparation of cross-linked molded body in Example 4-4] The primary cross-linked body obtained in Example 4-1 was subjected to secondary cross-linking at 200°C for 0.5 hours using a high-temperature thermostat (product name: horizontal high-temperature furnace PHH-202, manufactured by ESPEC (stock)) to obtain the cross-linked molded body of Example 4-4. [Evaluation] The compressive settling strain (CS) and the content of low molecular weight components in each crosslinked molded body were measured. The results are shown in Table 7. As shown in Table 7, the physical properties or processability of the molded bodies obtained in all examples are excellent. Among them, as shown in Table 7, the crosslinked molded body of Example 4-1, obtained by secondary crosslinking in a heat medium maintained at a lower temperature of 150°C for 16 hours, has a smaller compressive settling strain and a very small content of low molecular weight components. [Table 7] <Examples 5-1~5-6> [Preparation of Uncrosslinked Components] As the first stage, using an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for both the front and rear rollers, a rotation speed of 16 rpm for the front roller, and a rotation speed of 18 rpm for the rear roller), the raw materials shown in Raw Material 1 of Tables 8 and 9 were mixed for 10 minutes. Next, as the second stage, the mixture obtained in the first stage was rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for both the front and rear rollers, a rotation speed of 16 rpm for the front roller, and a rotation speed of 18 rpm for the rear roller), and the raw materials shown in Raw Material 2 of Tables 8 and 9 were added, and the mixture was kneaded for 10 minutes to obtain the uncrosslinked components of each example. The Munich viscosity of the uncrosslinked components of each example is shown in Tables 8 and 9. [Preparation of sheet-like cross-linked molded body] The uncross-linked components of each example were pressed in a mold at 170°C for 10 minutes using a compression molding machine to obtain a sheet-like cross-linked molded body with a thickness of 2 mm. [Evaluation] For the uncrosslinked components of each example, the crosslinking behavior was measured with a crosslinking temperature of 170°C and a crosslinking time of 10 minutes. The results are shown in Tables 8 and 9. As shown in Tables 8 and 9, it can be seen that the tc90 of all examples was less than 10 minutes, indicating that sufficient crosslinking speed was obtained during crosslinking. Furthermore, the evaluation results of the physical properties of the cross-linked molded articles in each example are shown in Tables 8 and 9. As shown in Tables 8 and 9, it can be seen that the physical properties or processability of the molded articles obtained in all examples are superior. Among them, as shown in Tables 8 and 9, the compressive settling strain (CS) of Examples 5-1 to 5-5, whose uncross-linked components have a Munich viscosity in the range of 0.1 to 8, is smaller than that of Examples 5-6, whose uncross-linked components have a higher Munich viscosity. Also, the compressive settling strain (CS) is evaluated for sheet-like cross-linked molded articles. [Table 8] [Table 9] <Examples 6-1~6-7> [Preparation of Uncrosslinked Components] As the first stage, using an AWATORI Rentaro degassing mixer (THINKY Corporation, AR-250, rotary / revolutionary impeller-less mixing method), the raw materials shown in Raw Material 1 of Table 10 were mixed at room temperature for 10 minutes. Next, as the second stage, the formulation obtained in the first stage was rolled onto a 3-roll mill (AIMEX Corporation, BR-230BV, roll size ϕ86.5×230mmL), and the raw materials shown in Raw Material 2 of Table 10 were added. After mixing at room temperature for 10 minutes, the uncrosslinked components of each example were obtained. The B-type viscosity of the uncrosslinked components of each example is shown in Table 10. [Preparation of sheet-like cross-linked molded body] The uncross-linked components of each example were pressed in a mold at 170°C for 10 minutes using a compression molding machine to obtain a sheet-like cross-linked molded body with a thickness of 2 mm. [Evaluation] For the uncrosslinked components of each example, the crosslinking behavior was measured at various crosslinking temperatures and times as shown in Tables 11 and 12. The results are shown in Tables 11 and 12. As shown in Tables 11 and 12, the molded articles obtained in Examples 6-1 to 6-6 exhibit superior physical properties or processability. As shown in Tables 11 and 12, the crosslinking reaction did not occur at 90°C, but it did occur above 120°C. Furthermore, the compression set (CS) was used to evaluate the sheet-like crosslinked molded articles. Furthermore, the evaluation results of the physical properties of the cross-linked molded articles in each example are shown in Table 13. As shown in Table 13, it can be seen that the physical properties or processability of the molded articles obtained in Examples 6-1 to 6-6 are superior. As shown in Table 13, it can be seen that the hardness of Examples 6-1 to 6-6 using copolymer (S-2) is lower than that of Example 6-7 using copolymer (A-1), and the EB is larger. [Table 10] [Table 11] [Table 12] [Table 13] <Examples 1-4> The copolymer compositions of each example were prepared as follows. As the first stage, the raw materials shown in Raw Material 1 of Table 14 were mixed using a BB-4 type mixer (manufactured by Kobe Steel). The mixing conditions were a rotor speed of 50 rpm and a hammer pressure of 3 kg / cm². 2 The mixing time is 5 minutes to obtain the first stage of the mixture at an outlet temperature of 150℃. Next, as the second stage, the formulation obtained in the first stage is rolled onto an 8-inch roller (manufactured by Nippon Roller Co., Ltd., with a surface temperature of 50°C for the front roller and 50°C for the rear roller, a rotation speed of 18 rpm for the front roller and 15 rpm for the rear roller), and the raw materials shown in Raw Material 2 of Table 14 are added to it. The mixture is then kneaded for 5 minutes to obtain an uncrosslinked copolymer composition. [Evaluation] Odor was evaluated for the copolymer composition of each example. Furthermore, the crosslinking rate and physical properties of the crosslinked molded articles were measured and evaluated. The results are shown in Table 14. As shown in Table 14, it can be seen that the physical properties or processability of the molded articles obtained in all examples are excellent. As shown in Table 14, Examples 1-4 using the hydrogen-containing silicon-based compound (Y-1-1) maintained a moderate crosslinking rate of approximately 20 minutes or more at 180°C (90 minutes) and 125°C (1 minute), while also exhibiting sufficient resistance to charring. Furthermore, Examples 1-4, which used a hydrogen-containing silicon-based compound (Y-1-1), showed EB values ​​as adequate as those in Example 9, which did not contain an organic peroxide. Also, Examples 1-4 and Example 9, which used an organic peroxide (Z-1), did not have odor problems. [Table 14] (Industrial applicability) According to the present invention, it is possible to provide a copolymer composition containing ethylene-α-olefin-nonconjugated polyene with superior physical properties or processability, a foamed molded article obtained from the copolymer composition and a method for manufacturing the same, and a crosslinked molded article and a method for manufacturing the same.

Claims

1. A copolymer composition comprising: a copolymer (S); a hydrogen-containing silicon-based compound (Y); and a platinum-based catalyst; wherein, The aforementioned copolymer (S) comprises units derived from ethylene (A), units derived from α-olefins (B) having 3 to 20 carbon atoms, and units derived from non-conjugated polyenes (C) containing at least two partial structures selected from formulas (I) and (II) below, and satisfies the following requirements (i) and (ii); the aforementioned hydrogen-containing silicon compound (Y) is an organo-based hydrogen polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atom bondsed to hydrogen atoms within the molecule, as shown in formula (a); the content of copolymer (S) relative to the total mass of the copolymer composition is 10 to 50% by mass; the content of hydrogen-containing silicon compound (Y) relative to the total mass of the copolymer composition is 0.3 to 5.0% by mass; the content of platinum group catalyst relative to the total mass of the copolymer composition is 0.01 to 1.0% by mass. The aforementioned requirement (i) is that the mole number [A] of the constituent units derived from ethylene (A) is 40 / 60 to 99.9 / 0.1 relative to the mole number [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms; the aforementioned requirement (ii) is that the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the aforementioned copolymer (S) is 0.07 to 10% by mass; [Chem. 1] [Chem. 2] In formula (a), n and p are independently 0 or positive numbers, m is a number in the range of 1 to 20, the sum of n, m and p is 5 to 50, the complex numbers R1 and R2 are independently alkyl groups with 1 to 20 carbon atoms, Ra is an alkyl group with 7 to 20 carbon atoms containing at least one branched unit represented by -CH(CH3)- in the alkyl group between the aryl group and the silicon atom, and the two Rs are independently selected from the group consisting of R1, R2, hydrogen atoms and Ra. These constituent units can be arranged in a block or random arrangement. When n=1, at least one of the two Rs is a hydrogen atom, and when n=0, both Rs are hydrogen atoms.

2. As in claim 1, the copolymer composition, wherein, Further containing a sodium bicarbonate-based foaming agent that satisfies the following requirement (b): In the cumulative distribution curve of the number of unevenness parameters, 10% of the cumulative unevenness parameters are 0.9 or less, and in the cumulative distribution curve of the number of equivalent circle diameter parameters, 90% of the cumulative equivalent circle diameters are 43 μm or more; wherein, unevenness is the ratio of the envelope perimeter to the perimeter measured by dynamic image analysis using methyl ethyl ketone as the dispersion solvent; and equivalent circle diameter is the diameter of a circle with an area equal to the projected area of ​​the particle, measured by dynamic image analysis using methyl ethyl ketone as the dispersion solvent.

3. The copolymer composition as claimed in claim 2, wherein, Relative to 100 parts by mass of the copolymer (S), it contains 0.1 to 100 parts by mass of the hydrogen-containing silicon compound (Y), 0.001 to 10 parts by mass of the platinum-based catalyst, and 1 to 30 parts by mass of the sodium bicarbonate-based foaming agent.

4. The copolymer composition as claimed in claim 2, wherein, Furthermore, relative to 100 parts by mass of the above copolymer (S), it contains 0 to 2 parts by mass of a reaction inhibitor.

5. A copolymer composition of any one of claims 2 to 4, wherein, Furthermore, relative to 100 parts by weight of the above copolymer (S), it contains 0.07 to 10 parts by weight of hindered phenolic antioxidant.

6. A foamed molded body comprising a foamed body that has been crosslinked and foamed by any one of the copolymer compositions of claims 2 to 5.

7. A method for manufacturing a foamed molded article, comprising melt extruding the copolymer composition of any one of claims 2 to 5 and crosslinking it.

8. The copolymer composition as claimed in claim 1, wherein, The copolymer (S) further satisfies requirements (iii) to (v) below, and has a limiting viscosity [η] of 2.0 to 4.0 dL / g; further, relative to 100 parts by mass of the copolymer (S), it contains 0.1 to 200 parts by mass of carbon black, 0.1 to 200 parts by mass of paraffinic processing oil, and reaction inhibitors as needed; the composition of the mixture of components other than the above-mentioned hydrogen-containing silicon compound (Y), the above-mentioned platinum catalyst and the above-mentioned reaction inhibitors has a Munich viscosity "ML(1+4)100℃" of 8 to 200 obtained by the method described in JIS K 6300-1:2013; requirement (iii) is (nC) obtained according to the following formula (1) which is 4.5 or more and 40 or less; (nC) = (Mw) × {mass percentage concentration of (C) / 100} / molecular weight of (C) ‧‧‧ (1) In formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). The above requirement (iv) is obtained by linear viscoelastic measurement using a rheometer (190°C), and the ratio P(η✽(ω=0.1) / η✽(ω=100)) of the complex viscosity η✽(ω=0.1) at frequency ω=0.1 rad / s to that at frequency ω=100 rad / s, the limiting viscosity [η], and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S) satisfies the following equation (2): P / ([η]2.9)≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is that the number of long chain branches per 1000 carbon atoms (LCB1000C) obtained by 3D-GPC and the natural logarithm of the weight average molecular weight (Mw) [Ln(Mw)] satisfy the following formula (3); LCB1000C≦1-0.07×Ln(Mw) ‧‧‧Formula (3).

9. A cross-linked molded article, characterized in that it is obtained by cross-linking the copolymer composition of claim 8.

10. The copolymer composition as claimed in claim 1, wherein, The copolymer (S) further satisfies the following requirements (iii) to (v), and has a limiting viscosity [η] of 0.5 dL / g or more and less than 2.0 dL / g; further, relative to 100 parts by mass of the copolymer (S), it contains 10 to 100 parts by mass of paraffinic processing oil; the Munich viscosity "ML(1+4)100℃" obtained according to the method described in JIS K 6300-1:2013 is 0.1 to 8; the requirement (iii) is that (nC) obtained according to the following formula (1) is 4.5 or more and 40 or less; (nC) = (Mw) × {mass percentage concentration of (C) / 100} / molecular weight of (C) ‧‧‧(1) In formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). The above requirement (iv) is the ratio P(η✽(ω=0.1) / η✽(ω=100)) of the complex viscosity η✽(ω=0.1) (Pa‧sec) at a frequency ω=0.1 rad / s and the complex viscosity η✽(ω=100) (Pa‧sec) at a frequency ω=100 rad / s, obtained by linear viscoelastic measurement (190°C) using a rheometer, the limiting viscosity [η], and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S) (mass%)) satisfying the following equation (2): P / ([η]2.9)≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is that the number of long chain branches per 1000 carbon atoms (LCB1000C) obtained by 3D-GPC and the natural logarithm of the weight average molecular weight (Mw) [Ln(Mw)] satisfy the following formula (3); LCB1000C≦1-0.07×Ln(Mw) ‧‧‧Formula (3).

11. A cross-linked molded article, characterized in that it is obtained by cross-linking the copolymer composition of claim 10.

12. The copolymer composition as claimed in claim 1, wherein, The copolymer (S) further satisfies the following requirements (iii) to (v), and has a limiting viscosity [η] of 0.5 dL / g or more and less than 2.0 dL / g; further, relative to 100 parts by mass of the copolymer (S), it contains 0.1 to 200 parts by mass of carbon black and 100 to 400 parts by mass of paraffinic processing oil; and has a Brinell rotational viscosity at 25°C of 6000 Pa·s or less, obtained according to the method described in JIS K 7117:1999; the requirement (iii) is that (nC) obtained according to the following formula (1) is 4.5 or more and 40 or less; (nC) = (Mw) × {mass percentage concentration of (C) / 100} / molecular weight of (C) ‧‧‧ (1) In formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C). The above requirement (iv) is obtained by linear viscoelastic measurement using a rheometer (190°C), and the ratio P(η✽(ω=0.1) / η✽(ω=100)) of the complex viscosity η✽(ω=0.1) at frequency ω=0.1 rad / s to that at frequency ω=100 rad / s, the limiting viscosity [η], and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S) satisfies the following equation (2): P / ([η]2.9)≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is that the number of long chain branches per 1000 carbon atoms (LCB1000C) obtained by 3D-GPC and the natural logarithm of the weight average molecular weight (Mw) [Ln(Mw)] satisfy the following formula (3); LCB1000C≦1-0.07×Ln(Mw) ‧‧‧Formula (3).

13. A cross-linked molded article, characterized in that it is obtained by cross-linking the copolymer composition of claim 12.

14. The copolymer composition as claimed in claim 1, wherein, Further containing a reaction inhibitor and an organic peroxide (Z); The copolymer (S) further satisfies the following requirements (iii) to (v); The organic peroxide (Z) contains 0.2 to 6 parts by mass relative to 100 parts by mass of the copolymer (S); The requirement (iii) is that (nC) obtained according to the following formula (1) is 4.5 or more and 40 or less; (nC) = (Mw) × {mass percentage concentration of (C) / 100} / molecular weight of (C) ‧‧‧ (1) Wherein, in formula (1), (Mw) is the weight average molecular weight of the copolymer (S), the mass percentage concentration of (C) is the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S), and the molecular weight of (C) is the molecular weight of the non-conjugated polyene (C); The above requirement (iv) is obtained by linear viscoelastic measurement using a rheometer (190°C), and the ratio P(η✽(ω=0.1) / η✽(ω=100)) of the complex viscosity η✽(ω=0.1) at frequency ω=0.1 rad / s to that at frequency ω=100 rad / s, the limiting viscosity [η], and the mass percentage concentration of the constituent units derived from the above-mentioned non-conjugated polyene (C) (the content (mass%) of the constituent units derived from the above-mentioned non-conjugated polyene (C) relative to the total mass of the constituent units constituting the above-mentioned copolymer (S) satisfies the following equation (2): P / ([η]2.9)≦(C) mass percentage concentration × 6 ‧‧‧Equation (2) The above requirement (v) is that the number of long chain branches per 1000 carbon atoms (LCB1000C) obtained by 3D-GPC and the natural logarithm of the weight average molecular weight (Mw) [Ln(Mw)] satisfy the following formula (3); LCB1000C≦1-0.07×Ln(Mw) ‧‧‧Formula (3).

15. The copolymer composition as claimed in claim 14, wherein, Relative to 100 parts by mass of the above copolymer (S), it contains 0.01 to 10 parts by mass of the above hydrogen-containing silicon compound (Y), 0.001 to 1 part by mass of the above platinum-based catalyst, and 0.001 to 5 parts by mass of the above reaction inhibitor.

16. A cross-linked molded article, characterized in that it is obtained by cross-linking the copolymer composition of claim 14 or 15.

17. A method for manufacturing a copolymer composition according to any one of claims 1 to 5, 8, 10, 12, 14 and 15, comprising: mixing the copolymer (S) and a hydrogen-containing silicon compound (Y) at 80 to 170°C for 1 to 10 minutes to obtain a first-stage formulation; and adding a platinum catalyst to the first-stage formulation and mixing at 10 to 130°C for 1 to 30 minutes to obtain a second-stage formulation; wherein the copolymer (S) has constituent units derived from ethylene (A), constituent units derived from α-olefins (B) having 3 to 20 carbon atoms, and constituent units derived from non-conjugated polyenes (C) having at least two or more partial structures selected from formulas (I) and (II) below, and satisfies the following requirements (i) and (ii); The aforementioned hydrogen-containing silicon compound (Y), as shown in formula (a), is an organic-based hydrogen-containing polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atoms bonded to hydrogen atoms within the molecule; The aforementioned requirement (i) is that the mole ratio [A] of the constituent units derived from ethylene (A) to the mole ratio [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms is 40 / 60 to 99.9 / 0.1; The aforementioned requirement (ii) is that the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the aforementioned copolymer (S) is 0.07 to 10% by mass; [Chemical 3] [Chemical 4] In formula (a), n and p are independently 0 or positive numbers, m is a number in the range of 1 to 20, the sum of n, m, and p is 5 to 50, the complex numbers R1 and R2 are independently alkyl groups with 1 to 20 carbon atoms, Ra is an aralkyl group with 7 to 20 carbon atoms containing at least one branched unit represented by -CH(CH3)- in the alkyl group between the aryl group and the silicon atom, and the two Rs are independently selected from the group consisting of R1, R2, hydrogen atoms, and Ra. These constituent units can be arranged in a block or random arrangement. When n=1, at least one of the two R atoms is a hydrogen atom; when n=0, both R atoms are hydrogen atoms.

18. A method for manufacturing the copolymer composition as claimed in claim 17, wherein, Relative to 100 parts by mass of the above copolymer (S), 0.1 to 100 parts by mass of the above hydrogen-containing silicon compound (Y) and 0.001 to 10 parts by mass of the above platinum-based catalyst are used.

19. A crosslinked molded article formed by crosslinking a copolymer composition obtained by the manufacturing method of the copolymer composition of claim 17 or 18.

20. A method for manufacturing a crosslinked molded body, comprising: melt-blending the above-mentioned copolymer (S), the above-mentioned hydrogen-containing silicon-based compound (Y) and the above-mentioned platinum-based catalyst to obtain a blend containing a copolymer composition of any one of claims 1 to 5, 8, 10, 12, 14 and 15; performing a first crosslinking by pressing the above-mentioned blend at 120 to 200°C for 1 to 20 minutes to obtain a primary molded body; and performing a second crosslinking by heating the above-mentioned primary molded body in a heat medium at 120 to 160°C for 10 to 24 hours; wherein the above-mentioned copolymer (S) has a constituent unit derived from ethylene (A), a constituent unit derived from an α-olefin (B) having 3 to 20 carbon atoms, and a constituent unit derived from a non-conjugated polyene (C) having at least two or more partial structures selected from formula (I) and formula (II), and satisfies the following requirements (i) and (ii); The aforementioned hydrogen-containing silicon compound (Y) is an organo-based hydrogen polysiloxane having at least one silicon atom bonded to an aralkyl group and at least two silicon atom bondsed to hydrogen atoms within the molecule, as shown in formula (a); The aforementioned requirement (i) is that the mole ratio [A] of the constituent units derived from ethylene (A) to the mole ratio [B] of the constituent units derived from α-olefins (B) having 3 to 20 carbon atoms is 40 / 60 to 99.9 / 0.1; The aforementioned requirement (ii) is that the mass percentage concentration of constituent units derived from non-conjugated polyenes (C) relative to the total constituent units constituting the aforementioned copolymer (S) is 0.07 to 10% by mass; [Chem. 5] [Chem. 6] In formula (a), n and p are independently 0 or positive numbers, m is a number in the range of 1 to 20, the sum of n, m, and p is 5 to 50, the complex numbers R1 and R2 are independently alkyl groups with 1 to 20 carbon atoms, Ra is an aralkyl group with 7 to 20 carbon atoms containing at least one branched unit represented by -CH(CH3)- in the alkyl group between the aryl group and the silicon atom, and the two Rs are independently selected from the group consisting of R1, R2, hydrogen atoms, and Ra. These constituent units can be arranged in a block or random arrangement. When n=1, at least one of the two R atoms is a hydrogen atom; when n=0, both R atoms are hydrogen atoms.

21. A method for manufacturing a cross-linked molded article as claimed in claim 20, wherein, Relative to 100 parts by mass of the above copolymer (S), 0.1 to 100 parts by mass of the above hydrogen-containing silicon compound (Y) and 0.001 to 10 parts by mass of the above platinum-based catalyst are used.

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